Table of Contents
Advertisement
Connecting AC Power to UL Recognized ESD Power Supply
PMB Connections
RM Ports
1–26
Figure 1-14 shows the iSTAR eX-PMB connections.
Wiring RM Devices to PMB
Wire RM bus devices to the PMB ports using the pin assignments indicated in Figure 1-15.
There is a limit of four RM readers, eight I/8 modules, and eight R/8 modules on a bus.
The RM bus connects RM readers, I/8s, and R/8s to the PMB port connectors. The RM bus
uses half-duplex RS485 with data on pins 2 and 3. Pins 1 and 4 are used to provide power.
Be sure that +12 VDC is connected to pin 1 and GND is connected to pin4.
If pins 1 and 4 are reversed the circuitry may be damaged.
iSTAR eX PMB Port
Figure 1-14: iSTAR eX PMB Connections
Figure 1-15: RM Bus Connections
RM-4, RM-4E, I/8, R/8
Advertisement
Table of Contents
