ProSoft Technology PLX8X-MNET-61850 - Manual (Page 116)

Diagnostics and Troubleshooting PLX8x-MNET-61850 ♦ Communication Gateway
User Manual Modbus TCP/IP to IEC 61850
Page 116 of 228 ProSoft Technology, Inc.
May 14, 2014
Command List
The following Command List diagnostics data is available from the gateway
Value Description
Client Name This data is shown for each command, in a scrolling list:
Command <command number>:
Enable 0 = The command is disabled and will not be executed in the
normal polling sequence.
1 = The command is executed each scan of the command list if
the Poll Interval Time is set to zero. If the Poll Interval time is set,
the command is executed when the interval timer expires.
2 = The command executes only if the internal data associated
with the command changes
Poll Interval This parameter specifies the minimum interval to execute
continuous commands (Enable code of 1). The parameter is
entered in 1/10th of a second. Therefore, if a value of 100 is
entered for a command, the command executes no more
frequently than every 10 seconds.
Function This parameter specifies the Modbus function to be executed by
the command. These function codes are defined in the Modbus
protocol. The following table defines the purpose of each function
supported by the gateway. More information on the protocol is
available from the Schneider Electric web site
(www.modicon.com).
3 = Read Holding Registers(4X)
6 = Preset (Write) Single Register(4X)
Start Register/Register Count Registers 1 to 125 (or Coils 1 to 800).
This parameter specifies the number of registers or digital points
to be associated with the command. For functions 3 and 16, this
parameter sets the number of registers to be associated with the
command. In the case of floats the count will be 1 for each float.
Swap Code 0 = None - No Change is made in the byte ordering
1 = Words - The words are swapped
2 = Words & Bytes - The words are swapped then the bytes in
each word are swapped
3 = Bytes - The bytes in each word are swapped.
The words should be swapped only when using an even number
of words.
Node IP This is the IP address of the device being addressed by the
command.
Service Port This will be 502 or 2000. A value of 502 is used to address
Modbus TCP/IP servers which are compatible with the Schneider
Electric MBAP specifications (this will be most devices)
Slave Address This parameter is always 1 for Modbus TCP/IP.
FC 23 Read Address FC 23 Read Address: This is always 0. This function code is not
supported for PLX8X-MNET-61850.
FC 23 Write Address FC 23 Write Address: This is always 0. This function code is not
supported for PLX8X-MNET-61850.