Siemens Simatic S7-1500 / ET 200MP - Page 20

Connecting
3.1 Pin assignment
Technology module TM FAST (6ES7554-1AA00-0AB0)
Equipment Manual, 04/2023, A5E52301130-AA
19
Input delay for digital inputs and RS485/TTL channels
To suppress interference, you can configure an input delay for the digital inputs and
RS485/TTL inputs.
When selecting the option "Take over from TM FAST application" you specify for each digital
input or RS485/TTL input a self-defined input delay by using the system logic parameters
DI_FILTER_USER_VAL_MS and RS485_TTL_FILTER_USER_VAL_MS. You can find additional
information about the system logic parameters in the programming manual Creating a
TM FAST Application (https://support.industry.siemens.com/cs/ww/en/view/109816088).
Note
If you set an input delay <
0.1 ms, you must use shielded cables to connect the respective
digital input or RS485/TTL input.
Digital outputs DQm and DIQm
Up to 12 digital outputs are available. Four DIQm can be used either as digital input or digital
output.
The digital outputs are:
• Not electrically isolated from one other
• Electrically isolated from the backplane bus
• Protected from overload and short-circuit
Relays and contactors can be connected direct without external circuitry. You can find
information on the maximum possible operating frequencies at the digital outputs in the
section Technical specifications (Page 51).