Yokogawa µR20000 - Manual (Page 241)

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IM 04P02B01-01E
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12.5 Specfcatons of Optonal Functons
Alarm Output Relay (/A1, /A2, /A3, /A4, and /A5)
Item Specfcatons
Operation Outputs relay contact signals from the dedicated terminals on the rear panel when alarms occur.
Number of outputs 2 outputs (/A1), 4 outputs (/A2), 6 outputs (/A3), 12 outputs (/A4), 24 outputs (/A5)
Relay contact rating 250 VDC/0.1 A (for resistance load)
250 VAC (50/60 Hz)/3 A
Output format NO-C-NC
Auxiliary functions Energized/De-energized operation selectable (common to all relays)
Hold/Non-hold operation selectable (common to all relays)
AND/OR operation selectable
Reflash operation (Fixed to relay I01, I02, and I03. Relay release time is approx. 500 ms.)
Diagnosis output Relay I01 can be used for diagnosis output.
Diagnosis output: Outputs a relay signal when an error in the recording section (plotter on the
pen model), a burnout, or an error in the A/D converter is detected. Relay operation is fixed to
de-energized and non-hold.
RS-422A/485 Communcaton Interface (/C3)
Item Specfcatons
Connection Complies with EIA RS-422A/485
Connection type Multi-drop connection 1:32 (four-wire system), 1:31 (two-wire system)
Transmission mode Half-duplex
Synchronization Start-stop synchronization
Baud rate 1200, 2400, 4800, 9600, 19200, or 38400 bps
Start bit Fixed to 1 bit
Data length 7 bits or 8 bits
Stop bit Fixed to 1 bit
Parity Odd, even, or none (no parity)
Received buffer length 2047 bytes
Escape sequence Open and close
Protocol Dedicated protocol, Modbus slave protocol
Communication mode ASCII for input/output for control and setting
ASCII or binary for input/output of measured data
Communication distance 1.2 km
Ethernet Communcaton Interface (/C7)
Item Specfcatons
Function
Setting/Measurement server Uses a dedicated protocol
Measured/computed data, setup data, status byte
Maintenance/Test server Connection information, network statistics, etc.
Instrument information server Model, serial number, etc.
Electrical and mechanical specifications
Conforms to IEEE 802.3.
Interface Basic specifications
Connection Ethernet (10BASE-T)
Protocol TCP, IP, UDP, ICMP, and ARP
The maximum number of simultaneous connections and the number of simultaneous use
Functon
Admnstrators
Maxmum Number of
Connectons Users
Number of
Smultaneous Users Port Number
Setting/Measurement server 3 1 2 34260/tcp
Maintenance/Test server 1 1 1 34261/tcp
Instrument information server - - - 34264/udp
Miscellaneous
User authentication Administrator: 1, users: 6 (limitations placed on users)
Keepalive Drops the connection if there is no response to an inspection packet. Use or not use is
selectable.