Yokogawa Button Operated MV2000 - Manual (Page 272)

13-10 M-4660
13.5 Options
Alarm Output Relay (/A1, /A2, /A3, and /A4)
Item Specifications
Action Transmits relay contact signals from the terminals on the rear panel when alarms occur.
Number of outputs 2 outputs (/A1), 4 outputs (/A2), 6 outputs (/A3), and 12 outputs (/A4)
Relay contact rating 250 VAC (50/60 Hz)/3 A, 250 VDC/0.1 A (for resistance load)
Output format NO-C-NC
Relay operation Energized/de-energized, AND/OR, hold/non-hold, and reflash settings are selectable.
RS-232 Interface (/C2) and RS-422/485 Interface (/C3)
Item Specifications
Medium EIA RS-232(/C2) or EIA RS-422/485(/C3)
Protocol Dedicated protocol or Modbus protocol
Synchronization Start-stop synchronization
Transmission mode (RS-422/485)
Four-wire, half-duplex, multi-drop connection (1:N (N = 1 to 32))
Data rate 1200, 2400, 4800, 9600, 19200, or 38400 bps
Data length 7 or 8 bits
Stop bit 1 bit
Parity Odd, even, or none
Handshaking Off:Off, XON:XON, XON:RS, and CS:RS
Communication distance (RS-422/485)
1200 m
Modbus communication Operation modes: Master or slave
FAIL/Status Output Relay (/F1)
Item Specifications
FAIL output Relay contact output on CPU error
Relay operation Energized during normal operation and de-energized on system error.
Status output Transmits a relay contact signal when a selected condition occurs
Relay operation Energized when a condition occurs
Relay contact rating 250 VAC (50/60 Hz)/3 A, 250 VDC/0.1 A (for resistance load)