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4.5.7.1
Connecting to a PC or an RS-485/RS-232 converter
Point-to-point connection for the EW-Com protocol (4-wire)
Example:
Switch settings
Coniguration
ON: S1, S2, S3
OFF: S4, S5, S6
[Operating] - [System setup] - [Connected devices] - [PC via EW-Com] - [In-
terface] - [Built-in RS
‑
485]
4.5.7.2
Connecting to a PLC or an RS-485/RS-232 converter
Point-to-point connection for the ModBus protocol (2-wire)
Example:
RS-485
PR 5900
PR 5900
RxD/TxD-P
RxD/TxD-N
TxB
TxA
RxB
RxA
GNDI
S4
S1
S2
S3
1K6
1K6
120
120
DC
DC
1
2
3
4
5
6
↓
O
N
S5
1K6
S6
1K6
PLC
PLC
ModBus-RTU (master)
TxB/RxB
TxA/RxA
GND
4 Device installation
Process Controller Maxxis 5 PR 5900
Minebea Intec
EN-43
Summary of Contents for Maxxis 5
Page 137: ......