79
The jumper pin settings at two locations can be used to switch the usage for the
RS-232C/RS-422 connector. Make the settings by referring to the table below.
IMPORTANT
Be sure to always set to the same jumper settings as the CPU card (CPU 1) that is
already installed in slot 13. (The CPU 2 jumper settings will be applied when control is
transferred to the expansion CPU card (CPU 2) due to failure or removal of CPU 1.)
RS-232C/RS-422
connector usage
setting
JP2
JP6
For RS-232C
(Default setting)
232C side
232C side
For RS-422
422 side
422 side
422/232C
422/232C
422/232C
422/232C
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