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Appendix G. MD485 to AVW200 Interface

MD485 Configuration

Each MD485 in the network must be configured with the following settings

(see Figure G-2):

a. Active Ports – RS-232 and RS-485

b. Communication Mode – PakBus Networking

c. RS-232 Baud Rate – 38.4k

d. RS-485 Baud Rate – 38.4k

FIGURE G-2. Deployment tab in DevConfig with proper

MD485 configuration.

AVW200 Configuration

The AVW200 is configured using DevConfig.

a. Protocol – PakBus

b. PakBus Address –set to a unique value for each AVW200 in the network

c. RS-232 Baud Rate – 38.4k

Hardware Connections

Use the CABLE2TP cable to connect the MD485s to each other. Use a 18663

Null Modem Cable to connect the MD485 to the datalogger; one end of the

null modem cable attaches to the RS-232 port on the MD485, and the other end

attaches to the RS-232 port on the datalogger. Use another 18663 Null Modem

Cable to connect each of AVW200s to an MD485; one end of the null modem

cable attaches to the RS-232 port on the MD485, and the other end attaches to

the RS-232 port on the AVW200.

G-2

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Campbell-scientific MD485 RS-485 Multidrop Interface Bedienungsanleitung Seite 64