IVC Displays NP-612S, User Manual

Page: 13 / 35

13
2.3 Communications Connections
The ports as you look at the back of the case, are the ports for connecting to a PLC or
some external device (Controller Connectors).
Cable
Requirements
Different cables are required for various devices.
Caution
Restrict cable length to less than 500’ (150m) for
RS485/422 devices and 50’ (15m) for RS232 devices to
avoid communications problems.
Shielded cable must be used for long lengths or cables run
in an electrically noisy environment.
Do not run cables next to AC power lines or near sources
of electrical noise.
Be sure that the cable ends have been inserted all of the
way into mating connectors and are secure
2.3.1 Connector COM 1 [RS232]