Wiring
Wiring Consideration and Guidelines
Observe the following guidelines when wiring the MAP Gateway:
• Do not allow the MAP Gateway to hang from a cable connection.
• Provide some slack in the cable between the MAP Gateway and the controller or other device
to which you are connecting.
SA/FC Port
The MAP Gateway has one RS-485 FC/SA bus port that connects through a supplied 6-pin modular
jack and cable assembly. For data transmission and voltage specifications, see the
Do not plug the SA/FC connector into a standard phone jack.
See the
Connecting to the MAP Gateway Wi-Fi Network
section for the location of the
communications terminal on the MAP Gateway.
Figure 10: SA/FC Port Pin
Field Bus Communications Connections
About this task:
To connect the MAP Gateway to the SA/FC field bus for communication, connect one end of the
RJ-12 cable to the MAP Gateway and the other end of the cable to a controller or network sensor.
Note:
The MAP Gateway has a dedicated MS/TP bus address of 03. The number of MAP
Gateway units that can be connected simultaneously to one MS/TP bus depends on
the number of FC and SA ports available and connected to the bus. The MS/TP bus can
accommodate one MAP Gateway on the FC bus and one MAP Gateway for each SA bus
connected to the trunk.
Performance of the MAP Gateway varies based on the number of SA bus connections and
amount of traffic.
USB Port
The USB port on the MAP Gateway is a 5-pin, Micro-B peripheral serial port that conforms to
the USB 2.0 standard. The MAP Gateway USB port is for connecting to a computer to perform
substantial software updates. Refer to the
MAP Update Tool (LIT-12012979)
for details on performing
Mobile Access Portal Gateway Installation Guide
16
