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Section 10. rs-485 communications, Rs-485 communications – Campbell Scientific CC5MPX and CC5MPXWD Digital Network Cameras User Manual

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10-1

Section 10. RS-485 Communications

The optional RS-485 communication interface of the CC5MPX can be used in
conjunction with the MD485 to interface a datalogger to one or more cameras.
Refer to the MD485 manual for additional information.

The MD485 is useful for connecting more than one camera to a datalogger or if
long cable lengths are involved. If multiple cameras are connected to an
MD485, then it would be beneficial to offset the capture times of the images so
that only one camera is attempting to transmit a file at any given time.

The camera can download images or video via an RS-485 port using the
PakBus protocol. An MD485 is required to interface the camera to a
datalogger. The following items are required for RS-485 PakBus
communications and can be confirmed by either the web interface or the
Device Configuration Utility:

• Confirm that the PakBus Port parameter of the Communications Settings

is reading RS-485.

• Set the RS-485 BAUD rate to match the BAUD rate of the device being

connected to the camera.

• Set the parameter PakBus Address of Communication Settings to a unique

value in the PakBus network.

• Set the parameter PakBus Destination Address of the device that the

camera needs to send images to.

• Include PakBus Security Code as required.

FIGURE 10-1. RS-485 Shown in PakBus Port Setting

Set for RS-485