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Since pin #14 is not protected, be sure to use it only within its
rated range.
When making a cable, please be aware of the following:
<For RS-422 Connectors>
• The following pairs of pin #'s must be connected (shorted):
#18 (CSB) <-> #19 (ERB)
#21 (CSA) <-> #22 (ERA)
• Connecting the #9 (TRMX) and #10 (RDA) wires adds a termination resistance
of 100Ω Ω Ω Ω Ω between RDA and RDB.
• Use a 4-wire cable when the PLC type is Memory Link and the cable is RS-422.
<For RS-232C Connectors>
• Do not connect #9 (TRMX), #10 (RDA), #11 (SDA), #15 (SDB), #16 (RDB), #18
(CSB), #19 (ERB), #21 (CSA), and #22 (ERA).
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