Rice Lake 920i Installation Manual V4.01 - Manual (Page 17)

J11
PORT 1
J9
PORT 3
J10
PORT 4
J2
PIEZO
BUZZER
OPTION
J13
+6VDC
GND
GND
–6VDC
EXPANSION BUS
GND
R
S
-2
3
2 RxD
R
S
-2
3
2 TxD
GND / –20mA OUT
R
S
-2
3
2 RxD
R
S
-2
3
2 TxD
+20mA OUT R
S
-2
3
2 RxD
R
S
-2
3
2 TxD
+20mA OUT
R
S
-485 TxD +
R
S
-485 TxD −
+5VDC
GND DIO1 DIO2 DIO
3
DIO4
INTERFACE
BOARD
CONNECTION
POWER
SUPPLY
SW1
SW2
JP3
1
1 1
J5 J6
J7
DIGITAL I/O
J8
PORT 2
OPTION CARD
CONNECTOR
OPTION CARD
CONNECTOR
OPTION CARD LOCATIONS
J1
1
BATTERY
J15
BOOT
MODE
SLOT 1 SLOT 2
GND / –20mA OUT
REMOTE
SETUP
SWITCH
Installation 11
Figure 2-5. 920i Rev G CPU Board