GE B90 Instruction Manual page 133
Ur series
low impedance bus
differential system
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Also See for B90:
- Instruction manual (510 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (442 pages)
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5 SETTINGS
For each RS485 port, the minimum time before the port will transmit after receiving data from a host can be set.
This feature allows operation with hosts which hold the RS485 transmitter active for some time after each transmis-
sion.
NOTE
c) NETWORK
PATH: SETTINGS
PRODUCT SETUP
NETWORK
MESSAGE
MESSAGE
MESSAGE
MESSAGE
These messages appear only if the B90 is ordered with an Ethernet card.
The IP addresses are used with the DNP, Modbus/TCP, IEC 61580, IEC 60870-5-104, TFTP, and HTTP protocols. The
NSAP address is used with the IEC 61850 protocol over the OSI (CLNP/TP4) stack only. Each network protocol has a set-
ting for the TCP/UDP port number. These settings are used only in advanced network configurations and should normally
be left at their default values, but may be changed if required (for example, to allow access to multiple UR-series relays
behind a router). By setting a different
map the relays to the same external IP address. The client software (EnerVista UR Setup, for example) must be configured
to use the correct port number if these settings are used.
When the NSAP address, any TCP/UDP port number, or any user map setting (when used with DNP) is changed, it
will not become active until power to the relay has been cycled (off-on).
NOTE
d) MODBUS PROTOCOL
PATH: SETTINGS
PRODUCT SETUP
MODBUS PROTOCOL
MESSAGE
The serial communication ports utilize the Modbus protocol, unless the port is configured for DNP or IEC 60870-5-104
operation. This allows the EnerVista UR Setup software to be used on the port. The UR operates as a Modbus slave device
only.
When using Modbus protocol on the RS232 port, the B90 responds regardless of the
grammed. For the RS485 port, each device on the serial bus must have a unique slave address from 1 to 254. Address 0
and addresses from 248 and up are reserved by the Modbus protocol specification, and so their use here is not recom-
mended. Address 0 is the broadcast address that all Modbus slave devices listen to. When
to 0, the UR accepts broadcast messages, but in compliance with protocol specifications for broadcast messages, never
replies. Addresses do not have to be sequential, but no two devices can have the same address or conflicts resulting in
errors occur. Generally, each device added to the link should use the next higher address starting at 1. When using Modbus
TCP/IP, the client must use the programmed
more information on the Modbus protocol.
GE Multilin
COMMUNICATIONS
NETWORK
IP ADDRESS:
0.0.0.0
SUBNET IP MASK:
0.0.0.0
GATEWAY IP ADDRESS:
0.0.0.0
OSI NETWORK
ADDRESS (NSAP)
ETHERNET OPERATION
MODE: Full-Duplex
for a given protocol on each UR-series relay, the router can
TCP/UDP PORT NUMBER
COMMUNICATIONS
MODBUS PROTOCOL
MODBUS SLAVE
ADDRESS: 254
MODBUS TCP PORT
NUMBER:
502
MODBUS SLAVE ADDRESS
B90 Low Impedance Bus Differential System
5.2 PRODUCT SETUP
Range: Standard IP address format
Not shown if CPU Type E is ordered.
Range: Standard IP address format
Not shown if CPU Type E is ordered.
Range: Standard IP address format
Not shown if CPU Type E is ordered.
Range: Select to enter the
OSI NETWORK ADDRESS
Not shown if CPU Type E is ordered.
Range: Half-Duplex, Full-Duplex
Not shown if CPU Type E or N is ordered.
Range: 1 to 254 in steps of 1
Range: 1 to 65535 in steps of 1
MODBUS SLAVE ADDRESS
MODBUS SLAVE ADDRESS
value in the Unit Identifier field. See Appendix B for
.
5
pro-
is set
5-13
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