Campbell-scientific MD485 RS-485 Multidrop Interface Uživatelský manuál stáhnout pdf (Strana 64)

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 Uživatelský manuál Strana 64