Calibration of U137, U235 & 237 Series Weight Indicators.
Date:141027 B01950 8(10)
J9:
U137/237 series main board. Interface connector for keyboard and display. 15p D–sub female. Obsolete.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Ground/shield.
ZERO (yellow)
PRINT/TEST (pink)
F (brown)
COUNT (grey)
NET/GROSS (white)
0VD (red)
TARE (black)
0VD (blue)
5VD (violet)
Disp D (red/blue)
Disp CK (grey/pink)
Disp CE(white/yellow)
0VD (green/brown)
5VD (white/green)
Connect GND to metal hood of D-sub.
Standard internal signals.
Max recommended distance to display 1m, keyboard 10m.
Pin 14 and 15 are backlight excitation of the display.
J9:
U2375. Interface connector for Tilt Sensor U9027. 15p D–sub female.
1
2
3
4
5
6
15
10VA
0VD
0VD
Pitch
Pitch 2
Roll
Ground/shield.
Max 10mA.
Use large cable area. Max 5mV voltage drop in cable.
-"-
To PE5 of the processor in U2375.
For external applications.
To PE6 of the processor in U2375.
Connect to metal hood of D-sub.
J8:
U137/237 series. U17310/1/3: RS232. U17310/3: Synchronous outputs. U17310: Optoisolated tare&print
inputs. 25p D–sub male.
1
2
3
5
7
8
10
11
12
13
14
16
18
19
20
22
23
GND
TD
RD
CTS
0VD
+5VD, max 25mA
SYNC CK
SYNC D1
SYNC D2
TARE
PT RET
PRINT/TEST
DTR
Connect to metal hood of D-sub.
RS232 B01910. U137 has inverted TTL output. Use J3 for RS232.
RS232 U137 has inverted TTL output. Use J3 for RS232.
RS232 U137 has inverted TTL output. Use J3 for RS232.
Not U17311/3.
Synchronous clock. HCMOS level. B01900.
Not U17311
Synchronous data 1. HCMOS level.
Not U17311
Synchronous data 2. HCMOS level.
Not U17311
Optoisolated 10 kohm input +10 - +30VDC.
Not U17311/3
Return of PRINT/TEST and TARE signal.
Optoisolated 10 kohm input +10 - +30VDC.
Not U17311/3
RS232 U137 has inverted TTL output. Use J3 for RS232.
J8:
U137/237 series. U1734: RS422. Synchronous outputs. Optoisolated tare&print inputs. 25p D–sub male.
1
2
3
5
7
9
10
11
12
13
14
16
18
19
20
22
23
GND
0VD
RD A
RD B
+5VD, max 25mA
SYNC CK
SYNC D1
SYNC D2
TARE
PT RET
PRINT/TEST
TD A
TD B
Connect to metal hood of D-sub.
RS422
RS422
Synchronous clock. HCMOS level. B01900.
Synchronous data 1. HCMOS level.
Synchronous data 2. HCMOS level.
Optoisolated 10 kohm input +10 - +30VDC.
Return of PRINT/TEST and TARE signal.
Optoisolated 10 kohm input +10 - +30VDC.
RS422
RS422
Im portant!
In order to avoid EMC problems, all external cables must be shielded. The D-sub hood must be of metal
or metalized with the shield connected. External boxes of metal (metalized) with the shield connected.
