GASSONIC OBSERVER-i
65
Baud Rate
Low Data Byte
Access
57.6K 06
Read/Write
38.4K
05
Read/Write
19.2K 04
Read/Write
9600
03
Read/Write
4800 02
Read/Write
2400
01
Read/Write
Table 17: Comm 1 Baud Rate
This function is indicated on the Low Data Byte (the High Data Byte is not used).
EXCEPTION -
If an illegal data value is entered which is not listed above, then the Exception Code 03
(Illegal Data Value) is returned.
NOTE
:
The default baud rate is 19200.
6.7.16. Comm 1 Data Format (11H)
A read returns the Comm 1 data format of the Gassonic Observer-i. A write changes the data format to
the requested data format. After the data format has been changed to the addressed unit, the Modbus
communications may cease or start producing Comm errors because the data format has changed;
therefore the master will have to change its data format to the slave’s new data format in order to
restart or provide proper communications.
Data
Parity
Stop
Format
Low Data
Byte
Access
8 None 1 8-N-1 00 Read/Write
8
Even
1
8-E-1
01
Read/Write
8 Odd 1
8-O-1 02 Read/Write
8
None
2
8-N-2
03
Read/Write
Table 18: Comm 1 Data Format
This function is indicated on the Low Data Byte and the High Data Byte is not used.
EXCEPTION -
If an illegal data value is entered which is not listed above, then the Exception Code 03
(Illegal Data Value) is returned.
NOTE:
The default Data Format is 8-N-1.