Serial Communications And Digital Inputs - Rice Lake IQ plus 350 Installation Manual

2.3.2

Serial Communications and Digital Inputs

To attach serial communications and digital input
cables, remove connector J4 from the board.
Connector J4 provides connections for the EDP
(Electronic Data Processing) port, printer port, and
two digital inputs. Connect communications and
digital input cables to connector J4 as shown in
Table 2-2.
Once cables are attached, reconnect J4 to the header
on the board (see Figure 2-6 on page 10). Use cable
ties to secure serial and digital input cables to the
inside of the enclosure as shown in Figure 2-2 on page
5.
The EDP port supports RS-232 communications only;
the printer port provides either active 20 mA output or
RS-232 transmission. Both ports are configured using
the SERIAL menu. See Section 3.0 on page 12 for
configuration information.
SW1
SETUP SWITCH
(ANALOG OUT)
JP4
TO BACKPLATE-MOUNTED
SETUP SWITCH
7
–EXC
JP2
6
+EXC
JP1
5
SHIELD
R16
R17
–SENSE
4
C23
R18
+SENSE 3
C24
–SIG 2
R19
J1
1
+SIG
C22
C36
6 IQ plus 350 Installation Manual
C64
U1
RN8
C3
R2
R3
U2
C1
U4
JP1
C18
R32
LOCATION OF INSTALLED ANALOG OUTPUT MODULE
J5
SN
U10
JP2
(ANALOG OUT)
C26
D2
L1 RN3
L2
R30
C49
C45
U9
C56
RN6
C54
U8
C50
Y1
C43
C46
Figure 2-3. IQ plus 350 CPU and Power Supply Board
Digital inputs can be set to provide several indicator
functions, including all keypad functions. The inputs
are active (on) with low voltage (0 VDC) and can be
driven by TTL or 5V logic without additional
hardware. Use the DIG IN menu to configure the
digital inputs.
Port J4 Pin
EDP Port
Printer Port
Digital Inputs
Table 2-2. J4 Pin Assignments
R6
C65
C6
C66
U3
R7
R8
C7
1
Y2
2
R13
J1
3
4
R22
RN4
RN7
J7
KEYPAD CONNECTOR
Label
1 EDPT RS-232 TxD
2 GND RS-232 Ground /
–20 mA OUT
3 EDPR RS-232 RxD
4 PRMA +20 mA OUT
5 PRT RS-232 TxD
6 IN2 Digital Input 2
7 IN1 Digital Input 1
1 2 3 5 6 7
4
J4
SERIAL COMM & DIGITAL IN
+
C11
C10
C12
C8
C9
C17
C19
U5
C20
C21
D4 D3 D5 D6
12 10 9 7
T1
C33
6 4 3 1
PWR2 PWR1
F1 F2
JP7
BROWN BLUE
WIRE WIRE
Function
C16
U11
U6
C34
R15
U7