Carlo Gavazzi WM4-96 - Manual (Page 66)

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66
Installation
Electrical connections
61
Dimensions, Panel cut-out
60
68
67
❑
Relay output
❑
Open collector outputs
❑
RS485 serial port
4-wire connection. Additional devices provided with RS485
(that is RS 1,2,3...N) are connected in parallel.
This diagram is valid also
for the open collector
modules with a lower
number of outputs. The
value of the load resist-
ances (Rc) must be cho-
sen so that the short-cir-
cuit current is lower than
100mA; the VDC voltage
must be lower than or
equal to 30 VDC.