Rice Lake IQ plus 2100SL Digital Bench Scale - Manual (Page 25)

Setup and Service Information 5
2.2.4 Serial Communications
To attach serial communications cables, connect
communications cables to connector J7 as sho wn in
Table 2-2. Use cable ties to secure serial cable to the
inside of the enclosure.
Use the SERIAL menu to configure seria
communications. See Section 3.2.4 on page 18 for
configuration information
2.2.5 Digital Inputs
Digital inputs (connectors J2 and J3) can be used to
perform remote ZERO and UNITS k ey presses or to
send serial data to a printer (remote PRINT k ey
function). The inputs are active (on) with low voltage (0
VDC) and can be dri ven by TTL or 5V logic without
additional hardware. Use the DIG IN menu to configur
the digital inputs. See Section 3.2.5 on page 19 for
information about configuring the digital inputs
2.3 Enclosure Reassembly
Once cabling is complete, position the backplate o ver
the enclosure and reinstall the backplate scre ws. Use
the torque pattern sho wn in Figure 2-3 to pre vent
distorting the backplate g asket. Torque screws to 15
in-lb (1.7 N-m).
Figure 2-3. IQ plus 210 Enclosure Backplate
2.4 Board Removal
If you must remove the IQ plus 210 CPU board, use the
following procedure:
1. Disconnect power to the indicator . Remove
backplate as described in Section 2.1 on
page 3.
2. Remove connections to J5 (load cell cable), J7
(serial communications), J2 and J3 (digital
inputs), J4 and J6 (piezo button inputs), and J1
(setup switch). Remove blue and brown power
input wires at J8. See Figure 2-2 on page 4 for
connector locations.
3. Remove the fi e nuts from the CPU board, then
lift the board out of the enclosure.
To replace the CPU board, reverse the above procedure.
Be sure to reinstall cable ties to secure all cables inside
the indicator enclosure.
J7 Pin Label Function
1 TxD RS-232 TxD
2 GND RS-232 Ground
3 RxD RS-232 RxD
Table 2-2. J7 Pin Assignments
S e t u p s w i t c h a c c e s s s c r e w
Fillister head screws
10
9
8
7
4
3
1
2
5 6
To r q u e b a c k p l a t e s c r e w s t o 1 5 i n - l b ( 1 . 7 N - m )
To r q u e p a t t e r n