User`s manual

2-9
Communication (RS-232C, RS-422/485) with a controller is enabled via the serial connector (CN1).
Bottom view
The serial connector pins correspond to signals as given below.
CN1 (D-su b 9-pin, female)
Pin No.
MJ1 MJ2
Signal Contents
Slide switch
(Note:1)
Signal Contents
1 +SD/RD RS-485 + data
Upper +SD/RD RS-485 + data
Lower +SD RS-422 + sending data
2 -SD/RD RS-485 - data
Upper -SD/RD RS -485 - data
Lower -SD RS-422 - sending data
3+5V
External supply + 5V
(Note 2)
-
+5V
External supply + 5V
(Note 2)
4+5V +5V
5SG
Signal ground
SG
Signal ground
6SG SG
7 RD RS-232C receiving data
Upper RD RS-232C receiving data
Lower +RD RS-422 + receiving data
8 SD RS-232C sending data
Upper SD RS-232C sending data
Lower -RD RS-422 - receiving data
Note 1) The slide switch for MJ2 is mounted on the lower side of the display unit.
Side View
Slide switch
Upper: RS-232C/RS-485
(2-wire connection)
Lower: RS-422
(4-wire connection)
Note 2) The allowable current of the external supply +5V from the display unit to MJ1/MJ2/USB-A port :
-150mA is the maximum current supply fot the total of MJ1 and MJ2.
- Please pay attention to the maximum current supply for the total of USB-A, MJ1 and MJ2.
It shouldn't be more than 500mA.
1
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8
2-4 Modular Jack (MJ1 / MJ2)