Connecting the Inputs and Outputs of the SM 335
2-6
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300
6ES7 335-7HG00-8BA1
Unused analog outputs
To ensure that unused analog outputs on the SM 335 are dead, you must deacti-
vate them and leave them open. An analog output is deactivated with HW Config.
2.4 Connecting the interval counter input
Non-Isolated
If you wire the interval counter input as a non-isolated input, connect pin 19 (M
IZ
)
and pin 20 (24 V power supply’s zero potential).
Isolated
If you wire the interval counter input as an isolated input, you may not connect pin
19 (M
IZ
) to pin 20 (24 V power supply’s zero potential).
Additional information
See Section 4.3 for more information about connecting the interval counter input.
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