S4000C
30
Parameter
Function
Type
Scale
Access
Register
Address
Master
I/O
Address
RXD CRC Hi
Errors
Total # of RXD CRC Hi Errors
Value
8-Bit
R
0025
40038
RXD CRC
Low Errors
Total # of RXD CRC Low Errors Value
8-Bit
R
0026
40039
Not
Used
N/A
0027
–
002C
40040 -
40045
Clear Comm
Errors
Clear All Comm Errors
Bit
(0)
W
002D
40046
Table 12: Command Register Locations Cont.
8.8 S4000C Command Register Details
8.8.1 Analog
A read returns a value, which is proportional to the 0-20mA output current. The current is based
on a 16-bit value. The scaling is 0 - 65535 decimal which corresponds to 0 - 21.7mA.
8.8.2 Mode
A read returns the present mode of the S4000C. A write command changes the mode to the
requested mode.
Exception: Returns an Exception Code 01 (illegal function) if an illegal write is requested.
A calibrate command returns an Exception Code 01 (Acknowledge 05). The operation will take
a long time to complete.
Function
Bit Position
Access
Calibration Complete
7 MSB
Read
Spanning 6
Read
Zero Complete, Waiting for Gas
5
Read
Zeroing 4
Read
Calibration Mode
3
Read/Write
Calibration Check Mode
2
Read/Write
Run Mode
1
Read
Startup Mode
0 LSB
Read
8.8.3 Status/Error
A read returns the Alarm state and Errors that are occurring at the present time, which are
indicated, by bit position.
Function
Bit Position
Access
Alarm 15
MSB
Read
Warn 14
Read
Fault 13
Read