5. COMMUNICATION IDENTIFIERS
IMSRM04-E8
70
(4) Precautions for LBA
z
The LBA function detects the occurrence of an error in the control loop, but cannot locate the error
point. Therefore in this case, check each control system in order.
z
No LBA function is activated in the following cases.
-While autotuning is being executed
-If operation mode is set to any mode other than "Normal."
z
If the LBA set time is shorter than anticipated or it does not match the controlled object, the LBA
may not turn on or off. In this case, change the LBA set time depending on the situation.
z
LBA output turns off in the following cases with LBA output turned on.
-When measured value (PV) rises (or falls) beyond (or below) the variation width determined by
the LBA within the LBA set time.
-When measured value (PV) enters the LBA deadband
Identifier C1: Local/computer transfer
When the operation panel is located between the host computer and the control unit, this identifier
which defines the settings by the operation panel (Local mode) or by the computer (Computer mode).
Only valid when connected with the Operation Panel.
Data range: 0: Local mode
1: Computer mode
Polling example:
E
O
T
C 1
E
N
Q
A
C
K
S
T
X
C 1 0
E
T
X
B
C
C
* Omit the operation panel address when the connection is made directly to control unit.
I
n the computer mode, the host computer has the priority for the settings and all changes on
the operation panel for the settings becomes invalid. (Except for the local/computer mode
transfer setting.)
Identifier
Next to identifier
Identifier
Operation
panel
address
*
Host computer send
Host computer send
SR Mini SYSTEM send
Data
(1 digit)
