Wiring The Interval Counter Input; Analog Outputs Which Are Not Wired; Electrically Isolated Mode - Siemens SIMATIC S7-300 Manual

Analog outputs which are not wired

Disable the analog outputs of SM 335 and leave them in open state in order to take them off-
voltage. Disable analog outputs in HW Config.
2.4

Wiring the interval counter input

Non-isolated
If wiring the interval counter input for operation in non-isolated mode you must interconnect
PIN 19 (M

Electrically isolated mode

If wiring the interval counter input for operation in electrically isolated mode you must not
interconnect PIN 19 (M
Additional information
For more information about the wiring of the interval counter input, refer to chapter Wiring the
interval counter input (Page 72).
SM 335 - High-speed analog mixed module for SIMATIC S7-300
Manual, 02/2009, A5E02409063-01
) with PIN 20 (24 V supply ground).
IZ
) with PIN 20 (24 V supply ground).
IZ
Wiring the inputs and outputs
2.4 Wiring the interval counter input
29