Specifications

C•CURE apC/L Technical Manual
Wiring Card Readers
4-6
Reader Wiring Configurations
To connect readers to the apC/L in a multidrop configuration:
1. Connect the P1:1 connector of each reader to either RDR Port A or
RDR Port B.
2. Connect the remaining pins in sequence.
3. Figure 4.3 shows the connections for a multidrop line configuration.
4. WirethereaderbusasinFigure4.3;daisy-chainreadersasneeded.
Figure 4.3 Connecting Devices to the apC/L in a Multidrop
Configuration
apC/L
Reader 1
RM 1, 2 or 4
GND
-TXD/-RXD
+TXD/+RXD
+12V
Two-wire RS-485 with
shield and drain wire
Reader 2
RM 1, 2 or 4
W1 on apC/L is IN when only one
port is used.
SetSW3-5ontheRMtoONforthe
last reader in the chain. Ground
each RM separately.
Connect drain wires to the apC/L
cabinet.
Do not connect drain wires to RMs.
apcl.bk Page 6 Monday, May 15, 2000 3:21 PM