Instruction manual

5. RKC COMMUNICATION PROTOCOL
IMR01H02-E3
40
Continued from the previous page.
Name Iden-
tifier
No. of
digits
Data range Factory set
value
Attri-
bute
CH
Setting change
rate limiter !
HH 6 0 (0.0) to span/min.
(0 or 0.0: Setting change rate
limiter OFF)
0R/W×
Used/unused of
channels
!
EI 1 0: Unused
1: Used for only alarm
2: Used for control and alarm
2R/W×
RUN/STOP
transfer
1
SR 10: STOP
1: RUN
1R/W−
PID/AT selection G1 1 0: PID control
1: Autotuning (AT)
0R/W×
PV bias PB 6 -span to +span
(Within -1999 to +9999 digits)
Temperature
input: 0 or 0.0
Voltage input:
0
R/W ×
Digital filter F1 6 0 to 100 seconds
(0: Digital filter OFF)
0R/W×
Proportioning
cycle time
2, 3
T0 6 1 to 100 seconds Relay contact
output: 20
Voltage pulse/
triac output: 2
R/W ×
Cool-side
proportioning
cycle time
3
(This item does not
use in the MA901)
T1 6 1 to 100 seconds Relay contact
output: 20
Voltage pulse/
triac output: 2
R/W
4
×
Scan interval time TL 6 1 to 10 seconds 2 R/W −
1
For changing the RUN/STOP, a maximum time of 100 ms is required after selecting is made. If
polling is made within 100 ms after selecting is made, the data before selecting is made may be sent
to the host side depending on the timing.
Relation with RUN/STOP transfer by DI
The instrument cannot be changed to the RUN by communication, if the instrument is the STOP
state by the contact input. (The “STOP” has priority.)
DI state RUN/STOP transfer by communication Instrument state
RUN RUN RUN
RUN/STOP
RUN STOP STOP
state
STOP RUN STOP
STOP STOP STOP
2
For heat/cool control: Heat-side proportioning cycle time
3
In case of current output (0 to 20 mA DC, 4 to 20 mA DC), these data becomes invalid.
4
In case of heat control, become RO (read only).
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