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4–6
You can connect the 1785-KE to another Data Highway interface module
with a longline cable. This cable can be up to 7,000 feet long. However,
remember that the cable length can limit the communication rate (refer to
the section earlier in this chapter entitled Electrical Characteristics of the
RS-232-C Port).
For information on how to construct a longline cable for connection to a:
1771-KG module, refer to figure
4.3
1773-KA or 1775-KA module, refer to figure
4.4
To construct the cable, use a male connector at each end. Use Belden 8723
or equivalent cable (available from Allen-Bradley under cat. no. 1778-CR).
Connect the cable shield at one end only.
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