A-1. INTRODUCTION
The fundamental procedures required for conguring input data of the M-System JX series eld programmable signal
conditioners are explained in this section. In order to do this, the Model PU-2A programming unit is required.
Each function is easily programmable via the PU-2A keyboard by selecting a specic number ([DATA] entry for each
[ITEM]) from the table of the specic unit function. The operator need only understand the meaning of each [ITEM]
in order to program the unit. No special programming skills or software is required.
There is specic terminology associated with the PU-2A programming unit. The table categories are called [GROUP],
which define whether the data is common for many types of transmitters or inherent for each transmitter model.
Each group has several [ITEM] numbers, each of which shows what is to be programmed or monitored.
[DATA] is the
specic input value or percentage to be adjusted. The PU-2A programming unit’s operations are based on these three levels:
[GROUP] – [ITEM] – [DATA].
A-2. GENERAL OPERATION DESCRIPTION
■DESCRIPTION
• When You Want to Monitor the Transmitter Status in Operation:
1) Be sure that the power is supplied to the transmitter.
2) Connect the PU-2A to the transmitter via the front modular jack.
3) Specify an item to be monitored.
Press [GROUP] NN [ITEM] NN. (N = number entry keys)
4) Specify another item if necessary. Repeat (2).
5) Disconnect the PU-2A.
• When You Want to Change Parameters:
1) Be sure that the power is supplied to the transmitter.
2) Connect the PU-2A to the transmitter via the front modular jack.
3) Switch the transmitter into PROGRAM mode with PU-2A.
4) Specify an item to be changed.
Press [GROUP] NN [ITEM] NN [DATA] N (NNN....) [ENTER] (N = number entry keys)
5) Specify another item if necessary. Repeat (3).
6) Disconnect the PU-2A.
■MAINTENANCE SWITCH & OPERATION MODES
There are two operation modes for JX signal conditioners: MONITOR mode and PROGRAM mode. You use the Main-
tenance Switch, lock command to prevent unauthorized access to specific data, for changing the operation mode.
In MONITOR mode, the signal conditioner is in normal operation, measuring, computing and outputting signals. You
can only monitor parameter settings, measuring result, output status but cannot affect the transmitter’s operation. No
parameter change except for the Maintenance Switch is available.
In PROGRAM mode, the transmitter stops measuring and renewing the output signal. The output signal is held, but
you can output a specic value for simulation and testing purposes. Parameter settings can be changed.
For changing to the PROGRAM mode, key in [ITEM] 01 [DATA] 1 [ENTER].
The display will appear as shown to the right:
When all the program changes are completed, disconnect the PU-2A. The
Maintenance Switch automatically defaults to “0” (lock position)*.
Do not turn on/off the power supply to the transmitter while the PU-2A is
connected. All memory will be lost if power is removed.
* For those models applicable to Section B, it is necessary to change the Maintenance Switch to MONITOR mode after pro-
gramming. All modication data will be lost if you unplug the PU-2A before returning to MONITOR mode. Read Section B.
D
G
M
I
T
0
S
1
W:PRG
(
.
)
MODE
