Watlow CLS200, MLS300 and CAS200 - Manual (Page 62)

56 Communications Specification
Chapter 3: Controller Parameter Descriptions
System Status (30)
The system status command consists of internal registers that flag
hardware and software exceptions. The system status command takes 4
bytes. (None of the controllers use the last 2 bytes; they are reserved.)
Here is a bit map of the first 2 system status bytes. More than 1 bit can
be set at a time.
Here’s a partial bit map of system status byte 2. The CLS and CAS use
bits 14 and 15 only.
System Command Register (31)
The System Command Register is a register of mode and configuration
flags for the controller’s processor.
• Default: 0.
Bit 0 1
0 Battery OK Dead battery
1 Init Start OK Bad Init Start Bit
2 AIM OK AIM comm failure
3 No Ambient Error Ambient Error
4 No Ambient Warning Ambient Warning
5 Zero Calibration OK Bad zero calibration
6 Full scale calibration
value OK Bad full scale calibration
value
7 Reserved
8 Alarms delay Off Alarms delay On
9-13 Reserved
14-15 See next table
Bit 15 Setting Bit 14 Setting Result
0 0 Controller has 4 loops
0 1 Controller has 8 loops
1 0 Controller has 16 loops
Bit 0 1
0 Use default output data on
startup. Use memory data on
startup.
1 Operator keys enabled. Operator keys locked.
2 Unit set to 60 Hz. Unit set to 50 Hz.
3 Ramp-soak time base in hours
and minutes. Ramp-soak time base in
minutes and seconds.
4 Alarm digital outputs active
Low. Alarm digital outputs active
High