KERN FTB Service Manual page 69

Optional interface: RS232C and analog second scale
Pin COM1 (RS232)
1 VCC (power supply +5V)
2 TxD 1 (transmit data)
3 RxD 1 (receive data)
4
3)
5 GND (Signal ground)
6
3)
7 3)
8
3)
9 3)
Optional interface: RS232C and Digital I/O
Pin COM1 (RS232)
1 1)
2 TxD 1 (transmit data)
3 RxD 1 (receive data)
4 3)
5 GND (Signal ground)
6 3)
7
3)
8 3)
9 VCC (power supply +5V)
1) unassigned
2) The VCC load on one interface must not exceed 100 mA
3) must not be connected
4) can be deactivated in the scale menu
5) External 5 ... 30 VDC for control inputs
6)
External 5 ... 30 VDC / max. 100 mA for control outputs
70
Analog second scale
2) 4) +Excitation (+8.2 VDC)
+Sense
shield
–Sense
–Excitation
1)
+Signal
–Signal
1)
COM2 (Digital I/O)
GND
OUT 0 6)
OUT 1
6)
OUT 2 6)
OUT 3
6)
IN 0 5)
IN 1
5)
IN 2 5)
IN 3
2) 4) 5)
FTx/ITx-SH-e-0720