IEC-60870-5-104 (104S) Protocol Implementation
104S
♦
ProLinx Gateway
Protocol Manual
(Firmware v3.00 and later)
Page 90 of 157
ProSoft Technology, Inc.
January 22, 2010
The protocol specification explains that the qualifier value for these commands
should be configured as:
Bits Value
Description
0 Not
Used
1
Threshold Value (Deadband)
2
Smoothing Factor (filter time constant) - Not Supported
3
Low Limit Transmission of Measured Value
4
High Limit Transmission of Measured Value
1 to 6
5..31 Reserved
0 No
Change
7
1 Change
0 Operation
8
1 Not
in
Operation
For the 104S gateway, the Low Limit and High Limit parameters cannot be changed
by command, because these values are calculated as follows:
Low Limit = (LAST REPORTED VALUE) - Deadband
High Limit = (LAST REPORTED VALUE) + Deadband
These commands must be sent to a specific Information Object Address. The 104S
gateway associates each Monitor Measured point with a Parameter point using
Parameter Offset
entries:
Summary of Contents for ProLinx 104S
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