ProSoft Technology MVI56-104S - Manual (Page 118)

MVI56-104S ♦ ControlLogix Platform Reference
IEC 60870-5-104 Server Communication Module User Manual
Page 118 of 188
ProSoft Technology, Inc.
November 18, 2009
Control Data Transfer
The control communication typically occurs when the client sends a command
request to update the module’s command points.
The data types addressing are described in the following table.
Data Type Data Size Addressing Type
C_SC_NA 1 bit Bit
C_DC_NA 2 bits Bit
C_RC_NA 1 byte Byte
C_SE_NA 1 word Word
C_SE_NB 1 word Word
C_SE_NC 2 words Word
Some of the command points may be configured to be selected before executed.
Refer to the following parameter to configure the select/operate timeout period.
After the module receives the SELECT operation it will wait for this period of time
for the EXECUTE operation. If the module does not receive an EXECUTE
operation within this period of time it will require another SELECT operation
before the EXECUTE operation.