Article number

*** spare part *** SIMATIC S7-1500, TM PosInput 2

SIMATIC S7-1500, TM PosInput 2 counter and position detection module for RS-422 incremental encoder or SSI absolute encoder, 2 channels, 2 DI, 2 DQ per channel

General information

Product type designation

TM PosInput 2

Firmware version

V1.3

V2.0

● FW update possible

Yes

Number of channels

2

Product function

● I&M data

Yes; I&M0 to I&M3

● Isochronous mode

Yes

Engineering with

● STEP 7 TIA Portal configurable/integrated from version

V12 (FW V1.0) ... V15 (FW V1.3)/V12 (FW V1.0), V13 (FW V1.1)

V17

● PROFIBUS from GSD version/GSD revision

GSD Revision 5

● PROFINET from GSD version/GSD revision

V2.3 / -

Installation type/mounting

Rail mounting

Yes; S7-1500 mounting rail

Supply voltage

Load voltage L+

● Rated value (DC)

24 V

● permissible range, lower limit (DC)

19.2 V

● permissible range, upper limit (DC)

28.8 V

● Reverse polarity protection

Yes

Input current

Current consumption, max.

75 mA; without load

Encoder supply

Number of outputs

4; One 5V and 24V encoder supply per channel

5 V encoder supply

● 5 V

Yes; 5.2 V ±2 %

● Short-circuit protection

Yes

● Output current, max.

300 mA; Per channel

24 V encoder supply

● 24 V

Yes; L+ (-0.8 V)

● Short-circuit protection

Yes

● Output current, max.

300 mA; Per channel

Power

Power available from the backplane bus

1.3 W

Power loss

Power loss, typ.

5.5 W

Address area

Address space per module

● Inputs

16 byte; Per channel

32 byte; 16 bytes per channel; 4 bytes for fast mode

● Outputs

12 byte; per channel; 4 bytes for Motion Control

24 byte; 12 bytes per channel; 4 bytes for Motion Control, 0 bytes for fast mode

Digital inputs

Number of digital inputs

4; 2 per channel

Digital inputs, parameterizable

Yes

Input characteristic curve in accordance with IEC 61131, type 3

Yes

Digital input functions, parameterizable

● Gate start/stop

Yes; only for pulse and incremental encoders

● Capture

Yes

● Synchronization

Yes; only for pulse and incremental encoders

● Freely usable digital input

Yes

Input voltage

● Type of input voltage

DC

● Rated value (DC)

24 V

● for signal "0"

-5 ... +5 V

● for signal "1"

+11 to +30V

● permissible voltage at input, min.

-30 V; -5 V continuous, -30 V brief reverse polarity protection

● permissible voltage at input, max.

30 V

Input current

● for signal "1", typ.

2.5 mA

Input delay (for rated value of input voltage)

for standard inputs

— parameterizable

Yes; none / 0.05 / 0.1 / 0.4 / 0.8 / 1.6 / 3.2 / 12.8 / 20 ms

— at "0" to "1", min.

6 µs; for parameterization "none"

— at "1" to "0", min.

6 µs; for parameterization "none"

for technological functions

— parameterizable

Yes

Cable length

● shielded, max.

1 000 m

● unshielded, max.

600 m

Digital outputs

Type of digital output

Transistor

Number of digital outputs

4; 2 per channel

Digital outputs, parameterizable

Yes

Short-circuit protection

Yes; electronic/thermal

● Response threshold, typ.

1 A

Limitation of inductive shutdown voltage to

L+ (-33 V)

Controlling a digital input

Yes

Digital output functions, parameterizable

● Switching tripped by comparison values

Yes

● Freely usable digital output

Yes

Switching capacity of the outputs

● with resistive load, max.

0.5 A; Per digital output

● on lamp load, max.

5 W

Load resistance range

● lower limit

48 Ω

● upper limit

12 kΩ

Output voltage

● Type of output voltage

DC

● for signal "1", min.

23.2 V; L+ (-0.8 V)

Output current

● for signal "1" rated value

0.5 A; Per digital output

● for signal "1" permissible range, max.

0.6 A; Per digital output

● for signal "1" minimum load current

2 mA

● for signal "0" residual current, max.

0.5 mA

Output delay with resistive load

● "0" to "1", max.

50 µs

● "1" to "0", max.

50 µs

Switching frequency

● with resistive load, max.

10 kHz

● with inductive load, max.

0.5 Hz; Acc. to IEC 60947-5-1, DC-13; observe derating curve

● on lamp load, max.

10 Hz

Total current of the outputs

● Current per module, max.

2 A

Cable length

● shielded, max.

1 000 m

● unshielded, max.

600 m

Encoder

Encoder signals, incremental encoder (symmetrical)

● Input voltage

RS 422

● Input frequency, max.

1 MHz

● Counting frequency, max.

4 MHz; with quadruple evaluation

● Cable length, shielded, max.

32 m; at 1 MHz

● Signal filter, parameterizable

Yes

● Incremental encoder with A/B tracks, 90° phase offset

Yes

● Incremental encoder with A/B tracks, 90° phase offset and zero track

Yes

● pulse encoder

Yes

● Pulse encoder with direction

Yes

● pulse encoder with one impulse signal per count direction

Yes

Encoder signals, incremental encoder (asymmetrical)

● Input voltage

5 V TTL (push-pull encoders only)

● Input frequency, max.

1 MHz

● Counting frequency, max.

4 MHz; with quadruple evaluation

● Signal filter, parameterizable

Yes

● Incremental encoder with A/B tracks, 90° phase offset

Yes

● Incremental encoder with A/B tracks, 90° phase offset and zero track

Yes

● pulse encoder

Yes

● pulse encoder with direction

Yes

● pulse encoder with one impulse signal per count direction

Yes

Encoder signals, absolute encoder (SSI)

● Input signal

to RS-422

● Telegram length, parameterizable

10 ... 40 bit

● Clock frequency, max.

2 MHz; 125 kHz, 250 kHz, 500 kHz, 1 MHz, 1.5 MHz or 2 MHz

● Binary code

Yes

● Gray code

Yes

● Cable length, shielded, max.

320 m; Cable length, RS-422 SSI absolute encoders, Siemens type 6FX2001-5, 24 V supply: 125 kHz, 320 meters shielded, max.; 250 kHz, 160 meters shielded, max.; 500 kHz, 60 meters shielded, max.; 1 MHz, 20 meters shielded, max. 1.5 MHz, 10 meters shielded, max.; 2 MHz, 8 meters shielded, max.

● Parity bit, parameterizable

Yes

● Monoflop time

16, 32, 48, 64 µs & automatic

● Multiturn

Yes

● Singleturn

Yes

Interface types

● TTL 5 V

Yes; push-pull encoders only

● RS 422

Yes

Isochronous mode

Filtering and processing time (TCI), min.

130 µs; only for pulse and incremental encoders

Bus cycle time (TDP), min.

250 µs

Interrupts/diagnostics/status information

Alarms

● Diagnostic alarm

Yes

● Hardware interrupt

Yes

Diagnoses

● Monitoring the supply voltage

Yes

● Wire-break

Yes

● Short-circuit

Yes

● A/B transition error at incremental encoder

Yes

● Telegram error at SSI encoder

Yes

Diagnostics indication LED

● RUN LED

Yes; green LED

● ERROR LED

Yes; red LED

● MAINT LED

Yes; Yellow LED

● Monitoring of the supply voltage (PWR-LED)

Yes; green LED

● Channel status display

Yes; green LED

● for channel diagnostics

Yes; red LED

Integrated Functions

Counter

Yes

● Number of counters

2

● Counting frequency, max.

4 MHz; with quadruple evaluation

Fast mode

Yes

Counting functions

● Can be used with TO High_Speed_Counter

Yes; only for pulse and incremental encoders

● Continuous counting

Yes

● Counter response parameterizable

Yes

● Hardware gate via digital input

Yes

● Software gate

Yes

● Event-controlled stop

Yes

● Synchronization via digital input

Yes

● Counting range, parameterizable

Yes

Comparator

— Number of comparators

2; Per channel

— Direction dependency

Yes

— Can be changed from user program

Yes

Position detection

● Incremental acquisition

Yes

● Absolute acquisition

Yes

● Suitable for S7-1500 Motion Control

Yes

Measuring functions

● Measuring time, parameterizable

Yes

● Dynamic measurement period adjustment

Yes

● Number of thresholds, parameterizable

2

Measuring range

— Frequency measurement, min.

0.04 Hz

— Frequency measurement, max.

4 MHz

— Cycle duration measurement, min.

0.25 µs

— Cycle duration measurement, max.

25 s

Accuracy

— Frequency measurement

100 ppm; depending on measuring interval and signal evaluation

— Cycle duration measurement

100 ppm; depending on measuring interval and signal evaluation

— Velocity measurement

100 ppm; depending on measuring interval and signal evaluation

Potential separation

Potential separation channels

● between the channels

No

● between the channels and backplane bus

Yes

● Between the channels and load voltage L+

No

Isolation

Isolation tested with

707 V DC (type test)

Ambient conditions

Ambient temperature during operation

● horizontal installation, min.

0 °C

-30 °C

● horizontal installation, max.

60 °C; Please note derating for inductive loads

● vertical installation, min.

0 °C

-30 °C

● vertical installation, max.

40 °C; Please note derating for inductive loads

Ambient temperature during storage/transportation

● min.

-40 °C

● max.

70 °C

Altitude during operation relating to sea level

● Installation altitude above sea level, max.

5 000 m; restrictions for installation altitudes > 2 000 m, see ET 200MP system manual

Decentralized operation

to SIMATIC S7-300

Yes

to SIMATIC S7-400

Yes

to SIMATIC S7-1200

Yes

to SIMATIC S7-1500

Yes

to standard PROFIBUS master

Yes; FW V1.1 and higher

Yes

to standard PROFINET controller

Yes

Dimensions

Width

35 mm

Height

147 mm

Depth

129 mm

Weights

Weight, approx.

325 g

Article number	6ES7551-1AB00-0AB0	6ES7551-1AB01-0AB0

	* spare part * SIMATIC S7-1500, TM PosInput 2	SIMATIC S7-1500, TM PosInput 2 counter and position detection module for RS-422 incremental encoder or SSI absolute encoder, 2 channels, 2 DI, 2 DQ per channel
General information
Product type designation	TM PosInput 2
Firmware version	V1.3	V2.0
● FW update possible	Yes
Number of channels		2
Product function
● I&M data	Yes; I&M0 to I&M3
● Isochronous mode	Yes
Engineering with
● STEP 7 TIA Portal configurable/integrated from version	V12 (FW V1.0) ... V15 (FW V1.3)/V12 (FW V1.0), V13 (FW V1.1)	V17
● PROFIBUS from GSD version/GSD revision	GSD Revision 5
● PROFINET from GSD version/GSD revision	V2.3 / -
Installation type/mounting
Rail mounting	Yes; S7-1500 mounting rail
Supply voltage
Load voltage L+
● Rated value (DC)	24 V
● permissible range, lower limit (DC)	19.2 V
● permissible range, upper limit (DC)	28.8 V
● Reverse polarity protection	Yes
Input current
Current consumption, max.	75 mA; without load
Encoder supply
Number of outputs	4; One 5V and 24V encoder supply per channel
5 V encoder supply
● 5 V	Yes; 5.2 V ±2 %
● Short-circuit protection	Yes
● Output current, max.	300 mA; Per channel
24 V encoder supply
● 24 V	Yes; L+ (-0.8 V)
● Short-circuit protection	Yes
● Output current, max.	300 mA; Per channel
Power
Power available from the backplane bus	1.3 W
Power loss
Power loss, typ.	5.5 W
Address area
Address space per module
● Inputs	16 byte; Per channel	32 byte; 16 bytes per channel; 4 bytes for fast mode
● Outputs	12 byte; per channel; 4 bytes for Motion Control	24 byte; 12 bytes per channel; 4 bytes for Motion Control, 0 bytes for fast mode
Digital inputs
Number of digital inputs	4; 2 per channel
Digital inputs, parameterizable	Yes
Input characteristic curve in accordance with IEC 61131, type 3	Yes
Digital input functions, parameterizable
● Gate start/stop	Yes; only for pulse and incremental encoders
● Capture	Yes
● Synchronization	Yes; only for pulse and incremental encoders
● Freely usable digital input	Yes
Input voltage
● Type of input voltage	DC
● Rated value (DC)	24 V
● for signal "0"	-5 ... +5 V
● for signal "1"	+11 to +30V
● permissible voltage at input, min.	-30 V; -5 V continuous, -30 V brief reverse polarity protection
● permissible voltage at input, max.	30 V
Input current
● for signal "1", typ.	2.5 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable	Yes; none / 0.05 / 0.1 / 0.4 / 0.8 / 1.6 / 3.2 / 12.8 / 20 ms
— at "0" to "1", min.	6 µs; for parameterization "none"
— at "1" to "0", min.	6 µs; for parameterization "none"
for technological functions
— parameterizable	Yes
Cable length
● shielded, max.	1 000 m
● unshielded, max.	600 m
Digital outputs
Type of digital output	Transistor
Number of digital outputs	4; 2 per channel
Digital outputs, parameterizable	Yes
Short-circuit protection	Yes; electronic/thermal
● Response threshold, typ.	1 A
Limitation of inductive shutdown voltage to	L+ (-33 V)
Controlling a digital input	Yes
Digital output functions, parameterizable
● Switching tripped by comparison values	Yes
● Freely usable digital output	Yes
Switching capacity of the outputs
● with resistive load, max.	0.5 A; Per digital output
● on lamp load, max.	5 W
Load resistance range
● lower limit	48 Ω
● upper limit	12 kΩ
Output voltage
● Type of output voltage	DC
● for signal "1", min.	23.2 V; L+ (-0.8 V)
Output current
● for signal "1" rated value	0.5 A; Per digital output
● for signal "1" permissible range, max.	0.6 A; Per digital output
● for signal "1" minimum load current	2 mA
● for signal "0" residual current, max.	0.5 mA
Output delay with resistive load
● "0" to "1", max.	50 µs
● "1" to "0", max.	50 µs
Switching frequency
● with resistive load, max.	10 kHz
● with inductive load, max.	0.5 Hz; Acc. to IEC 60947-5-1, DC-13; observe derating curve
● on lamp load, max.	10 Hz
Total current of the outputs
● Current per module, max.	2 A
Cable length
● shielded, max.	1 000 m
● unshielded, max.	600 m
Encoder
Encoder signals, incremental encoder (symmetrical)
● Input voltage	RS 422
● Input frequency, max.	1 MHz
● Counting frequency, max.	4 MHz; with quadruple evaluation
● Cable length, shielded, max.	32 m; at 1 MHz
● Signal filter, parameterizable	Yes
● Incremental encoder with A/B tracks, 90° phase offset	Yes
● Incremental encoder with A/B tracks, 90° phase offset and zero track	Yes
● pulse encoder	Yes
● Pulse encoder with direction	Yes
● pulse encoder with one impulse signal per count direction	Yes
Encoder signals, incremental encoder (asymmetrical)
● Input voltage	5 V TTL (push-pull encoders only)
● Input frequency, max.	1 MHz
● Counting frequency, max.	4 MHz; with quadruple evaluation
● Signal filter, parameterizable	Yes
● Incremental encoder with A/B tracks, 90° phase offset	Yes
● Incremental encoder with A/B tracks, 90° phase offset and zero track	Yes
● pulse encoder	Yes
● pulse encoder with direction	Yes
● pulse encoder with one impulse signal per count direction	Yes
Encoder signals, absolute encoder (SSI)
● Input signal	to RS-422
● Telegram length, parameterizable	10 ... 40 bit
● Clock frequency, max.	2 MHz; 125 kHz, 250 kHz, 500 kHz, 1 MHz, 1.5 MHz or 2 MHz
● Binary code	Yes
● Gray code	Yes
● Cable length, shielded, max.	320 m; Cable length, RS-422 SSI absolute encoders, Siemens type 6FX2001-5, 24 V supply: 125 kHz, 320 meters shielded, max.; 250 kHz, 160 meters shielded, max.; 500 kHz, 60 meters shielded, max.; 1 MHz, 20 meters shielded, max. 1.5 MHz, 10 meters shielded, max.; 2 MHz, 8 meters shielded, max.
● Parity bit, parameterizable	Yes
● Monoflop time	16, 32, 48, 64 µs & automatic
● Multiturn	Yes
● Singleturn	Yes
Interface types
● TTL 5 V	Yes; push-pull encoders only
● RS 422	Yes
Isochronous mode
Filtering and processing time (TCI), min.	130 µs; only for pulse and incremental encoders
Bus cycle time (TDP), min.	250 µs
Interrupts/diagnostics/status information
Alarms
● Diagnostic alarm	Yes
● Hardware interrupt	Yes
Diagnoses
● Monitoring the supply voltage	Yes
● Wire-break	Yes
● Short-circuit	Yes
● A/B transition error at incremental encoder	Yes
● Telegram error at SSI encoder	Yes
Diagnostics indication LED
● RUN LED	Yes; green LED
● ERROR LED	Yes; red LED
● MAINT LED	Yes; Yellow LED
● Monitoring of the supply voltage (PWR-LED)	Yes; green LED
● Channel status display	Yes; green LED
● for channel diagnostics	Yes; red LED
Integrated Functions
Counter	Yes
● Number of counters	2
● Counting frequency, max.	4 MHz; with quadruple evaluation
Fast mode		Yes
Counting functions
● Can be used with TO High_Speed_Counter	Yes; only for pulse and incremental encoders
● Continuous counting	Yes
● Counter response parameterizable	Yes
● Hardware gate via digital input	Yes
● Software gate	Yes
● Event-controlled stop	Yes
● Synchronization via digital input	Yes
● Counting range, parameterizable	Yes
Comparator
— Number of comparators	2; Per channel
— Direction dependency	Yes
— Can be changed from user program	Yes
Position detection
● Incremental acquisition	Yes
● Absolute acquisition	Yes
● Suitable for S7-1500 Motion Control	Yes
Measuring functions
● Measuring time, parameterizable	Yes
● Dynamic measurement period adjustment	Yes
● Number of thresholds, parameterizable	2
Measuring range
— Frequency measurement, min.	0.04 Hz
— Frequency measurement, max.	4 MHz
— Cycle duration measurement, min.	0.25 µs
— Cycle duration measurement, max.	25 s
Accuracy
— Frequency measurement	100 ppm; depending on measuring interval and signal evaluation
— Cycle duration measurement	100 ppm; depending on measuring interval and signal evaluation
— Velocity measurement	100 ppm; depending on measuring interval and signal evaluation
Potential separation
Potential separation channels
● between the channels	No
● between the channels and backplane bus	Yes
● Between the channels and load voltage L+	No
Isolation
Isolation tested with	707 V DC (type test)
Ambient conditions
Ambient temperature during operation
● horizontal installation, min.	0 °C	-30 °C
● horizontal installation, max.	60 °C; Please note derating for inductive loads
● vertical installation, min.	0 °C	-30 °C
● vertical installation, max.	40 °C; Please note derating for inductive loads
Ambient temperature during storage/transportation
● min.		-40 °C
● max.		70 °C
Altitude during operation relating to sea level
● Installation altitude above sea level, max.	5 000 m; restrictions for installation altitudes > 2 000 m, see ET 200MP system manual
Decentralized operation
to SIMATIC S7-300	Yes
to SIMATIC S7-400	Yes
to SIMATIC S7-1200	Yes
to SIMATIC S7-1500	Yes
to standard PROFIBUS master	Yes; FW V1.1 and higher	Yes
to standard PROFINET controller	Yes
Dimensions
Width	35 mm
Height	147 mm
Depth	129 mm
Weights
Weight, approx.	325 g
last modified:	3/12/2024