8-4. Jumper Setting
The serial interface is set to the RS-232C mode upon shipment from the factory. When using in the 20mA current loop mode, it is necessary to set the jumpers. The jumpers built into the Control Board allow for setting of functions shown in the table. However, the Bottom Cover must be removed to perform this setting. For setting the Jumper, disconnect the power source beforehand.
8-4-1. Removal of the Bottom Cover
TYPE
ONLY
Figure 8-4. Removal of the Bottom Cover
8-4-2. Setting of Jumper
Jumper | | Setting | Function | Factory |
No. | | Setting |
| | |
| OPEN | | RS-232C | |
J3 | | | | |
SHORT | | Current Loop | |
| | |
| | | | |
| A-C | | Selection of Current Loop | |
| | Output (between TTY-TXD and | |
J7 | | | |
| | TTY-TXDR) Signal Polarity | |
| | | |
| B-C | | (inversion possible) Consult | |
| | | STAR MICRONICS for details. | |
| | | | |
| | | – 33 – | |
