Watlow CLS200, MLS300 and CAS200 - Manual (Page 54)

48 Communications Specification
Chapter 3: Controller Parameter Descriptions
Bits 0 and 1 work together to determine some of the output’s
characteristics:
NOTE
Bit 2 in the heat output-type byte determines the loop’s
control status (Automatic or Manual). The controller
ignores Bit 2 in the cool output-type byte.
Setpoint (5)
This parameter contains the process setpoint, expressed in engineering
units. (The setpoint is affected by the Precision parameter.)
• The setpoint’s range depends on the loop’s input type.
• The default setpoint for a J-type thermocouple is 250 (25°F).
Process Variable (6)
The process variable contains the compensated input measurement,
expressed in engineering units. (This parameter is affected by the
Precision parameter.)
• The process variable’s range depends on the loop’s input type
(described in the Input Type section).
Output Filter (7)
The adjustable output filter dampens the control output response.
(Setting the number of scans to 0 disables the filter.)
• Range: 0 to 255 scans.
6 Output not set to Serial
DAC (see table below) Output set to Serial DAC
(see table below)
7 Output set to Reverse
action Output set to Direct
action
Bit 6
Setting
Bit 1
Setting
Bit 0
Setting
Result
0 0 0 Time Proportioning
0 0 1 DZC
0 1 0 Analog (only 8LS)
0 1 1 On/Off
1 0 0 SDAC
1 0 1 3P DZC
Bit Bit set to 0 Bit set to 1