Parameter
Supported Values
TCP Port
Valid values are 1 to 65535
Default: 502
Modbus Addressing Type
Valid values are Standard or Extended
Default: Standard
Modbus Station Address
Valid values are 1 to 65534.
Default: 1
Store and Forward
Messaging
Valid values are Enabled and disabled.
Default: Disabled
The
Master Idle Timeout
parameter sets when connections to a slave controller are closed. Setting
this value to zero disables the timeout; the connection will be closed only when your program closes
it. Any other value sets the timeout in seconds. The connection will be closed if no messages are sent
in that time. This allows the slave device to free unused connections.
The
Server Receive Timeout
parameter sets when connections from a remote device are closed.
Setting this value to zero disables the timeout; the connection will be closed only when the remote
device closes it. Any other value sets the timeout in seconds. The connection will be closed if no
messages are received in that time. This allows the controller to free unused connections.
The
Maximum Server Connections
parameter sets the number of incoming (server) connections
that the controller will allow. Incoming (server) connections are used when a remote device creates a
connection to this controller. Outgoing connections are used when this controller creates a
connection to a remote device (e.g. using a
masterip
function block from a TelePACE or ISaGRAF
program). Setting this value to the maximum allows the server to use all connections for incoming
connections. Setting the value below the maximum limits the number of incoming connections from
remote devices. This reserves the remaining connections for use by the controller for outgoing
connections.
The
TCP Port
parameter sets the port used by the Modbus/TCP protocol. In almost all cases this
should be set to 502. This is the well-known port number for Modbus/TCP. Modbus/TCP devices
use 502 by default, and on many devices the value cannot be changed. It is suggested that you
change this value only if this port is used by another service on your network. Consult your network
administrator to obtain a port if you are not using the default.
The
Addressing
parameter selects standard or extended Modbus addressing. Standard addressing
allows 255 stations and is compatible with standard Modbus devices. Extended addressing allows
65534 stations, with stations 1 to 254 compatible with standard Modbus devices.
The
Station
parameter sets the station number of the controller. The valid range is 1 to 255 if
standard addressing is used, and 1 to 65534 if extended addressing is used.
The
Store and Forward
Messaging
parameter controls forwarding of messages on the Ethernet
port. If this option is enabled, messages will be forwarded according to the settings in the store and
forward routing table.
11.2
RJ-45 Modular Connector for Ethernet
The SCADAPack 350 can be connected directly to a wall jack or hub using standard RJ-45 Category
5 patch cables. The following diagram shows the pin connections for the RJ-45 modular connector.
SCADAPack 350 Hardware Manual
February 14, 2007
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