sepam 20 user manual - Schneider Electric

Modbus communication Data addresses and encoding
PCRED301005EN - 06/2008
Synchronization zone
The synchronization zone is a table which contains the absolute date and time for
the time-tagging function. Time messages should be written in a single block
containing 4 words, using function 16: write word.
Messages can be read word by word or by groups of words using function 3.
Synchronization zone Word address Access Modbus function
enabled
Binary time (year) 0002 Read/write 3, 16
Binary time (months + days) 0003 Read 3
Binary time (hours + minutes) 0004 Read 3
Binary time (milliseconds) 0005 Read 3
See "time-tagging of events" chapter for data format.
Identification zone
The identification zone contains system-type information pertaining to the
identification of the Sepam equipment.
Some of the information in the identification zone is also found in the configuration
zone at the address FC00h.
Identification zone Word address Access Modbus function Format Value
enabled
Manufacturer identification 0006 R 3 0100
Equipment 0007 R 3 0
Marking + equipment type 0008 R 3 Idem FC01
Modbus version 0009 R 3 Idem FC02
Application version 000A/B R 3 Not managed 0
Sepam check-word 000C R 3 Idem 0100
Synthesis zone 000D R 3 Not managed 0
Command 000E R/W 3/16 Not managed Init. to 0
Extension address 000F R 3 FC00
This zone is provided to ensure compatibility with existing equipment. A more complete description is available starting at address FC00h in the configuration zone
or using the identification read function.
First events zone
The events zone is a table which contains a maximum of 4 time-tagged events.
Events should be read in a single block containing 33 words using function 3.
The exchange word can be written using functions 6 or 16, and read individually using
function 3.
Events zone 1 Word address Access Modbus function
enabled
Exchange word 0040 Read/write 3, 6, 16
Event n°1 0041-0048 Read 3
Event n°2 0049-0050 Read 3
Event n°3 0051-0058 Read 3
Event n°4 0059-0060 Read 3
See "time-tagging of events" chapter for data format.
Second events zone
The events zone is a table which contains a maximum of 4 time-tagged events.
Events should be read in a single block containing 33 words using function 3.
The exchange word can be written using functions 6 or 16 and read individually using
function 3.
Events zone 2 Word address Access Modbus function
enabled
Exchange word 0070 Read/write 3, 6, 16
Event n°1 0071-0078 Read 3
Event n°2 0079-0080 Read 3
Event n°3 0081-0088 Read 3
Event n°4 0089-0090 Read 3
See "time-tagging of events" chapter for data format.
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