5. COMMUNICATION DATA LIST
IMR02F04-E1
43
Communication data includes both Normal setting data and Engineering setting data.
Normal setting data:
No.1 to 24
Engineering setting data : No. 25 to 73
The Engineering setting data should be set according to the application before
setting any parameter related to operation. Once the Engineering setting data are
set correctly, no further changes need to be made to parameters for the same
application under normal conditions. If they are changed unnecessarily, it may
result in malfunction or failure of the instrument. RKC will not bear any
responsibility for malfunction or failure as a result of improper changes in the
Engineering setting.
Data handling when non-existing function is specified
(
When the specified identifier is
invalid
).
RKC communication
Polling:
The PG500 makes a timeout judgment after about 3 seconds, sends EOT, and
ends the data link.
Selecting: The PG500 sends a negative acknowledgment NAK to the host computer.
Corrections, such as re-send, must be made at the host computer.
Modbus
An attribute of the item for functions which are not in the indicator is RO (read only).
If read action to this item is performed, the read data will be “0.” If write action to this
item is performed, no error message is indicated and no data is written.
For cautions of data changing, refer to
5.3 The communication data which will be initialized
or changed, if the communication data are changed (P. 54)
For the Data mapping, refer to
4.8 How to Use Data Mapping (P. 39)
.
For details on the data, refer to the
PG500 Operation Manual (IMR02F02-E
).
.