Specifications

8 LaserLight Remote Display Installation & Operation Manual
Figure 2-8 shows the LaserLight remote display CPU board.
Figure 2-8. LaserLight Remote Display CPU Board
Port 0 which is connected to the indicator supports three configurations; 20 mA, RS-232, and RS-485
communications. Port 1 which is the Echo port, supports 20 mA and RS-232 communications.
2.4.3 20 mA Current Loop
The 20 mA current loop communication is provided on connector J6 of the CPU board (Figure 2-8,Table 2-2).
Ensure receive jumpers are across RX0, 20 mA and select
active or passive switch settings. Remove any unused
jumpers. (Figure 2-9)
2.4.4 RS-232
The RS-232 connection is provided on connector J8 of the CPU board (Figure 2-8,Table 2-2). Ensure the
transmit and receive jumpers are across TX0
232 and RX0 232. (Figure 2-9)
2.4.5 RS-485
The RS-485 connection is provided on connector J9 of the CPU board (Figure 2-8,Table 2-2). Ensure the
transmit and receive jumpers are across TX0
485 and RX0 485. (Figure 2-9)
Figure 2-9. Jumper Pin Locations
VR4
VR3
MX2
MX3
J3
DP3
C1
1
J2
J1
DP2
LO
C5
1
J6
1
1
J4
HCPL4100
HS2
RX1
RESET
VR2
HI
1
U7
1
ISP
1
J7
TX1
TX0
RX0
RX0_20M
A
TX0_232
RX0_232
RX0_485
TX0_485
TX1_232
TX1_20MA
RX1_232
RX1_20MA
1
J8
1
J9
VR1
DP1
MX1
HS1
TRIPSET
CPU +5V
TEST
MX3 +5V
TEST
TEST +12V
POWER
SUPPLY
1
1
1
1
1
1
RICE LAKE WEIGHING SYSTEMS
Assembly P/N
Revision
M
D
T
X
I
M
20mA
R
E
C
V
PAS
ACT
PAS
ACT
0
1
2002
KP1
J1 - DIGITAL I/O - FUTURE USE
J2 - FIBER LINK OPTION CARD
J3 - POWER SUPPLY INPUT
J4 - TEMPERATURE PROBE
J5 - LEARN SWITCH
J6 - 20mA SERIAL
J9 - RS-485 SERIAL
CONNECTOR GUIDE
J7 - TIME SET
KP1 - KEYPAD
J5
J8 - RS-232 SERIAL
20 mA
Active/Passive
Port 0 Jumpers
Signal LED’s
Signal LED’s
Reset Switch
Port 1
Jumpers