Siemens S5-135U/155U - Manual (Page 460)

9-78
System Manual
C79000-G8576-C199-06
Measurement with respect to ground/differential measurement
The type of measurement (with respect to ground or differential
measurement) is set with switch S9. The switch settings relate to the
locations on the module shown in Figure 9-26:
Type of Measurement Switch Setting S9
Measurement with respect to ground
ON
OFF
1 9
Differential measurement
1 9
ON
OFF
If you have preset differential measurement on switch S9, two channel
groups of four channels each are available. You can configure each channel
group separately for current or voltage measurement.
You set this with switches S5, S6, S7 and S8. Switches S5 and S7 allow three
settings (left, midpoint and right); switches S6 and S8 allow two settings (left
and right). The switch settings relate to the locations on the module shown in
Figure 9-26:
Setting the current/voltage measurement for channel group I
Channel Group I
(Channels 0 to 3) Switch S5 Switch S6
Current
Voltage
Setting the current/voltage measurement for channel group II
Channel Group II
(Channels 4 to 7)
Switch S7 Switch S8
Current
Voltage
Setting the Type of
Measurement
Current/Voltage
Measurement for
Individual Channel
Groups
Analog Input/Output Modules