76
RS-422/485 Connector Board Pin Configuration
SDA
Differential output (+)
SDB
Differential output (-)
RDA
Differential input (+)
RDB
Differential input (-)
TRM
Terminal resistance
S.G.
Signal ground
Short the TRM and RDB terminals and connect the internal terminal resistance at the location
furthest away from the host (PC or PLC).
It is recommended that twisted pair wires be used for connections.
The card is insulated from the internal circuit of the equipment by means of a photocoupler.
One-to-one connections
Communication is performed in measurement mode only. An error command will be sent in all other
modes.
The OPT-564 does not use flow control.
The CTS/RTS signal is not used.
X flow control is not used.
RS-422 host
OPT-564
SDA
SDB
RDA
RDB address 00
TRM.
S.G.
RS-485 host
OPT-564
RDA
RDB
SDA
SDB
S.G.
RDA
RDB
SDA
SDB
S.G.
SDA
SDB
RDA
RDB address 00
TRM.
S.G.
Summary of Contents for OPT-564
Page 1: ...DIGITAL TRANSMITTER OPT 564 Instruction Manual EN294 1924B ...
Page 2: ......
Page 12: ......
Page 80: ...68 Frequency Output Shield Frequency counter or other device ...