SIMATIC S7-1500, TM POSINPUT 2 COUNTING AND POSITON DETECTION MODULE, FOR RS422 INCREMENTAL ENCODER OR SSI ABSOLUTE ENCODER, 2 CHANNELS, 2DI,2DQ PER CHANNEL
Properties
The TM PosInput 2 technology module has the following properties:
● Technical properties
– Width: 35 mm
– Two channels
– Interfaces:
SSI encoder signals DAT and CLK or RS422/TTL encoder signals A, B and N
5 V and 24 V encoder supply output, short-circuit proof
DI0 and DI1 digital input signals (per channel)
DQ0 and DQ1 digital output signals (per channel)
L+ supply voltage
– Position value range: 31 bits
– Count range: 32 bits
– Monitoring of encoder signals for wire break, short-circuits and faulty voltages channel
by channel
– Hardware interrupts can be configured channel by channel
– Input filters for suppression of interferences at encoder inputs and digital inputs can be
configured
● Supported encoder/signal types
– SSI absolute encoder
– RS422/TTL incremental encoder with and without signal N
– RS422/TTL pulse encoder with direction signal
– RS422/TTL pulse encoder without direction signal
– RS422/TTL pulse encoders for up & down pulses
● Supported functions
– Isochronous mode
– Firmware Update
– Identification data I&M
Accessories
The following components are supplied with the technology module and can also be ordered
separately as spare parts:
● Shield bracket
● Shield terminal
● Power supply element
● Labeling strip
● U-connector
Other components
The following component needs to be ordered separately:
● Front connectors, including potential jumpers and cable ties
Synchronization for incremental encoders and pulse encoders
You can configure the edge of an external reference signal to load the counter with the
specified start value. The following external signals can trigger a synchronization:
● Rising or falling edge of a digital input
● Rising edge of signal N at the encoder input
● Rising edge of signal N at the encoder input depending on the level of the assigned digital
input
Comparison values
You can specify two comparison values to control the two digital outputs of the channel. If
the position, counter or measured value meets the configured comparison condition, the
corresponding digital output can be set to initiate control processes directly in the process.
The comparison values are configurable and can be modified during runtime with the user
program.
Hardware interrupts
The technology module can trigger a hardware interrupt in the CPU, for example, if a
compare event occurs, in the event of a zero crossing and/or a change of count direction
(direction reversal). You can specify which events (Page 44) are to trigger a hardware
interrupt during operation.
Diagnostic interrupt
The technology module can trigger a diagnostic interrupt in the event of a missing supply
voltage or an error at the digital outputs, for example. Select the diagnostic interrupts
(Page 43) in the device configuration freely.
Input filter
To suppress interference, you can configure an input filter for the RS422/TTL encoder inputs
and for the digital inputs.
Centralized application
You can use the technology module centrally in the S7-1500 automation system.
