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2.3.1 Connection to an External Device
The DB9 port farthest from the power connector as you look at the back of the case
(labeled SMIC PORT) is the port for connecting to a PLC or external device using
KEP's SMIC adaptor cables.
Cable
Requirements
Different cables are
required for various devices. The KEP part numbers have the
SMIC prefix. Refer to a KEP catalog or datasheet for a
complete listing of MMI-2XX compatible devices.
These cables can be obtained from the same distributor where
you purchased the MMI-2XX.
Caution
Restrict cable lengthto less than 500' (150m) for RS485/422 devices and 50' (15m)
for RS232 devices to avoid communications problems.
Communications problems cause the MMI display to hold until
communications can be established.
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.
SMIC Port
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