Omega RD100B - Manual (Page 215)

12-13
Specifications
12
12.5 Specifications of Optional Functions
Alarm Output Relay (/A1, /A2, and /A3)
Item Specifications
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)
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 Communication Interface (/C3)
Item Specifications
Connection Complies with EIA RS-422A/485
Connection type Multi-drop connection 1:32 (four-wire system), 1:31 (two-wire system, version 1.11 and later)
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 (version 1.11 and later)
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 Communication Interface (/C7)
Item Specifications
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
Function Maximum Number of Number of
Administrators Connections Users Simultaneous 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.