Yokogawa Button Operated MV2000 - Manual (Page 155)

7-2 M-4662
7.2 Serial Interface Specifications
RS-232 Specifications
Connector type: D-Sub 9-pin plug
Electrical and mechanical specifications:
Conforms to the EIA-574 standard (for the 9-pin interface of
the EIA-232 (RS-232) standard)
Connection: Point-to-point
Transmission mode: Half-duplex
Synchronization:
Start-stop synchronization
Baud rate: Select 1200, 2400, 4800, 9600, 19200, or 38400 [bps].
Start bit: 1 (fixed)
Data length: Select 7 or 8 bits (To output data in BINARY format, be sure to
set the data length to 8 bits.)
Parity: Select odd, even, or none
Stop bit: 1 (fixed)
Hardware handshaking: Select whether to fix the RS and CS signals to TRUE or to use
them for flow control.
Software handshaking: Select whether to use the X-ON and X-OFF signals to control
only the transmitted data or both the transmitted and received
data.
X-ON (ASCII 11H), X-OFF (ASCII 13H)
Receive buffer size: 2047 bytes
RS-422/485 Specifications
Terminal block type: 6 terminals, terminal screws: ISO M4/nominal length 6 mm
Electrical and mechanical specifications:
Conforms to EIA-422 (RS-422) and EIA-485 (RS-485)
standards
Connection: Multidrop Four-wire type 1:32
Two-wire type 1:31
Transmission mode: Half-duplex
Synchronization:
Start-stop synchronization
Baud rate: Select 1200, 2400, 4800, 9600, 19200, or 38400 [bps].
Start bit: 1 (fixed)
Data length: Select 7 or 8 bits
Parity: Select odd, even, or none
Stop bit: 1 (fixed)
Receive buffer size: 2047 bytes
Escape sequence: Open and close
Electrical characteristics: FG, SG, SDB, SDA, RDB, and RDA (six terminals)
SG, SDB, SDA, RDB, and RDA terminals are functionally
isolated from the MV internal circuit.
The FG terminal is frame ground.
Communication distance: Up to 1.2 km
Terminator:
External: recommended resistance 120 Ω, 1/2 W