Segment setpoint (55), Triggers and trigger states (56) – Watlow CLS200, MLS300 and CAS200 User Manual
Page 70
64 Communications Specification
Chapter 3: Controller Parameter Descriptions
In the Anafaze/AB protocol, the states are stored as bits in 5 bytes. Each
bit listed in the table below represents an output from 1 to 34.
When accessed via the Modbus-RTU protocol, this parameter contains
the ready segment event outputs for the first 10 profiles (A to J) only.
The state of each is stored in its own register. For access to all the ready
segment events, see parameter 103.
Segment Setpoint (55)
This parameter represents the setpoint the process variable will reach at
the end of the segment. (This value is affected by precision)
•
Range: Low Process Variable to High Process Variable. (–999 to
9999, legal value determined by input type.)
•
Default: 0.
Special logic applies to determining the decimal placement for the
Segment Setpoint when using the Anafaze/AB protocol. When a profile
runs on a loop with a precision setting greater than or equal to 0, the
setpoint is divided by an additional factor of 10 when the precision is
applied. When the profile runs on a loop with precision –1, the precision
is applied to the setpoint as usual (see Precision (19) on page 53).
For example, if a profile with a Segment Setpoint of 1000 runs on a loop
with its Input Type set to Linear and its Precision to 1, the resulting
setpoint is 10. If the same profile runs on a loop with Input Type set to J-
type thermocouple (precision set to –1), the setpoint will be 100.
For the Modbus-RTU protocol, the setpoint is scaled by the precision
setting only.
Triggers and Trigger States (56)
This byte holds the trigger input number, its active state, and its latch
status. Triggers are saved in memory as indicated below.
Seg(1) Trig(1), Seg(1) Trig(2), Seg(2) Trig(1), Seg(2) Trig(2), etc.
•
Range: 0 (no trigger), inputs 1 to 8.
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Byte 0
8
7
6
5
4
3
2
1
Byte 1
16
15
14
13
12
11
10
9
Byte 2
24
23
22
21
20
19
18
17
Byte 3
32
31
30
29
28
27
26
25
Byte 4
Reserved
34
33