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ROC800-Series Instruction Manual
5-12
Communications
Revised Jul-14
Terminations are required on the two EIA-422/485 (RS-422/485)
communication modules located at the extremities of the circuit. That is
to say, the two outside modules require terminations in order to
complete the communication circuit.
Figure 5-5. EIA-422/485 (RS-422/485) Jumpers
Table 5-10. EIA-422 (RS-422) Module
Jumper
Terminated
Not Terminated
TER
Out
Half
Full TER Out
Half
Full
J3
x
x
J4
x
x
J5
x
x
J6
x
x
Table 5-11. EIA-485 (RS-485) Module
Jumper
Terminated
Not Terminated
TER OUT Half
Full TER OUT Half
Full
J3
x
x
J4
x
x
J5
x
x
J6
x
x