Sharp ER-A450T Service Manual - Page 5

RS232 Interface

Get Sharp ER-A450T PDF manuals and user guides View all Sharp ER-A450T manuals
Add to My Manuals
Save this manual to your list of manuals

Page 5 highlights

7. RS232 Interface Channel No.: Port 1(CH8) Channel No.: Port 2(CH1) 1) Port 2 (CH1) 1 /CD 2 RD 3 SD 4 /ER 5 GND 6 /DR 7 /RS 8 /CS 9 on the Main PWB VCC /CI SW3 2) Port 1 (CH8) 1 /CD 2 RD 3 SD 4 /ER 5 GND 6 /DR 7 /RS 8 /CS 9 on the RS connector PWB +5V /CI SW2 +5V SW2 CI Pin No.9 : /CI signal (Default) Pin No.9 : +5V signal +5V SW2 CI Pin No.9 : /CI signal (Default) VCC SW3 /CI 3 1 Pin No.9 : Vcc(+5V) signal VCC SW3 /CI 3 1 The No.9 pin signal of the Port 1 (CH8) can be selected between the /CI signal and the +5V signal by changing the connection of the SW2 (initial value: /CI signal) NOTE: Optional bar code reader: When connecting an ER-A6HS1, connect it to the Port 1 (or 2) and switch the No.9 pin signal to the +5V signal. When connecting other RS232 devices to either the Port 1 (or 2), make sure the No.9 pin signal is proper before connecting the device. If you want to connect an RS232 device to the ECR with the No.9 pin of the port 1 (or 2) set to +5V, make sure the AC cable of the ECR is disconnected from the wall outlet to protect the device. 1 - 4

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
7. RS232 Interface
1) Port 2 (CH1)
2) Port 1 (CH8)
The No.9 pin signal of the Port 1 (CH8) can be selected between the
/CI signal and the +5V signal by changing the connection of the SW2
(initial value: /CI signal)
NOTE:
Optional bar code reader: When connecting an ER-A6HS1, connect
it to the Port 1 (or 2) and switch the No.9 pin signal to the +5V
signal.
When connecting other RS232 devices to either the Port 1 (or 2),
make sure the No.9 pin signal is proper before connecting the device.
If you want to connect an RS232 device to the ECR with the No.9
pin of the port 1 (or 2) set to +5V, make sure the AC cable of the
ECR is disconnected from the wall outlet to protect the device.
Channel No.:
Port 1(CH8)
Channel No.:
Port 2(CH1)
1
2
3
4
5
6
7
8
9
/CD
RD
SD
/ER
GND
/DR
/RS
/CS
/CI
VCC
SW3
on the Main PWB
Pin No.9 : /CI signal (Default)
Pin No.9 : Vcc(+5V) signal
3
1
SW3
VCC
/CI
3
1
SW3
VCC
/CI
1
2
3
4
5
6
7
8
9
/CD
RD
SD
/ER
GND
/DR
/RS
/CS
/CI
+5V
SW2
on the RS connector PWB
SW2
+5V
CI
SW2
+5V
CI
Pin No.9 : /CI signal (Default)
Pin No.9 : +5V signal
1 – 4