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4. PRE-START u p PROCEDURES
/MELSEC
(2)
Connector details
CHI (RS-422) connector
Set DIP switch SW16 ON t o use this port for programming
with the GPP or HGP.
Set DIP switch SW16 OFF, t o use this connector as a general-
purpose port.
CH2 (RS-422) terminal block
The terminal block is provided for use in the AD51 multidrop
system. A maximum of 32 AD51 stations may be included i n
the multidrop link.
This connector may also be used as a general-purpose RS-422
port.
CH3 (RS-232C) connector
Set DIP switch SW16 OFF t o use this port for programming
with the VT-220 or GPPIHGP set DIP switch SW16 ON t o use
this connector as a general-purpose port.
CH4 (RS-232C) connector
General-purpose RS-232C port.
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