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1MAC052634-MB D
3.3.8.4
615/620 series ANSI
Communication Protocol Manual
Table 25:
Interpretation of the integer status data value
1
Register address
4xxxx
4xxxx + 1
1. See Modbus ANSI point list manual for specific event record structure mappings.
Table 26:
Interpretation of the ACD data
1
Register address
4xxxx
4xxxx + 1
1. See Modbus ANSI point list manual for specific event record structure mappings.
Table 27:
Interpretation of the SEC data
1
Register address
4xxxx
4xxxx + 1
1. See Modbus ANSI point list manual for specific event record structure mappings.
The original SEC cnt attribute is actually defined as a 32 bit counter. The Modbus event
shows the least significant 16 bits of that counter (i.e., 0 - 65535).
Multiple event records reading
It is possible to read out up to 10 sequential event records in one event select/read
transaction. The number of sequential event records to be returned for reading shall be
written to the Num of records register in front of the selection register. This number can
be written once or it can be rewritten for each select/read transaction. If this number is
never written, only one event record is returned.
If the Modbus client requests multiple event records, the returned records should also be
read out by the client. One record consists of 11 registers, two records of 22 registers and
so on. The read length must thus be adjusted depending on the number of records
requested.
The selection/read operation is otherwise exactly similar to the single-record read case.
The next records to be returned always continues from the last record in the previous read
operation.
Vendor-specific implementation
Meaning
Higher 16 bit part of the 32 bit integer value
Lower 16 bit part of the 32 bit integer value
Meaning
xxxx.xxxx.xxxx.xxx0 Object in OFF position
xxxx.xxxx.xxxx.xxx1 Object in ON position
xxxx.xxxx.xxxx.xx00 Start in unknown direction
xxxx.xxxx.xxxx.xx01 Start in forward direction
xxxx.xxxx.xxxx.xx10 Start in backwards direction
xxxx.xxxx.xxxx.xx11 Start in both directions
Meaning
xxxx.xxxx.xxxx.x000 Unknown security violation
xxxx.xxxx.xxxx.x001 Critical security violation
xxxx.xxxx.xxxx.x010 Major security violation
xxxx.xxxx.xxxx.x011 Minor security violation
xxxx.xxxx.xxxx.x100 Warning
Security violations counter, 16 bits
Section 3
35
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