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4. HITACHI PLC 5-37
Connection to PLCs
HIDIC-H: Switch Setting
Baud rate: 19200 bps
MODE switch: To connect to both RS-232C and RS-422, set MODE switch to 9.
RS-232C (protocol 2 without port) RS-422 (protocol 2 with port)
ST No switch: “0” for both ×10, ×1
DIP switch
Available Memory
The available memory setting range varies depending on the PLC model. Be sure to set within the
range available with the PLC to be used. Use [TYPE] when assigning the indirect memory for macro
programs.
HIDIC-H
Switch Setting Contents
1 OFF Bit length
2OFF
Same as that set on V7 (normally 19200 bps)3ON
4ON
5ONWith parity
6ONEven
7 OFF Stop bit 1
8 ON With sumcheck
Memory TYPE Remarks
WR (internal word output) 0
X (external bit input) 1 WX as word device
Y (external bit output) 2 WY as word device
L (bit CPU link area) 3 WL as word device
M (bit data area) 4 WM as word device
TC (timer counter/elapsed time) 5
R (relay) 6
TD (timer counter/contact) 7
WN (network input/output) 8