Campbell CR800 Specifikace stáhnout pdf (Strana 294)

Section 14. PakBus Networking

14-10

For program initiated communications such as datalogger-to-datalogger

transfers, the program instruction can (1) have its Com port parameter set to 0

to auto-discover the attached communication peripheral’s active interface

(port), or (2) be configured to match the peripheral’s port. For example, if you

have an RF401 with CSDC 7 active interface, you can configure the program

instruction either:

• SendVariables (Res, 0, 0, 1, 0, 0, ”Pub”, ”FN”, Var, Sw)

• SendVariables (Res, ComSDC7, 0, 1, 0, 0, ”Pub”, ”FN”, Var, Sw)

It is convenient to make Com port parameter 2 equal to zero, so that whatever

port your communication peripheral is set for will work.

14.2.5.2 Baud Rates

By default the CR800’s BaudrateME and BaudrateRS232 settings are 115200

Auto (−115200). The Auto or minus sign instructs the port to auto-baud to

incoming communications. After a CR800 with negative (Auto) RS-232 or

M.E. baud rate has communicated, the number with the minus symbol (Auto)

changes to the most recently used baud rate.

Positive (non-Auto) baud rate settings fix the CR800’s baud rate at the

specified setting until a user edits it or a program instruction changes it. For

example, the SetStatus instruction can modify the CR800’s M.E. baud rate

setting as follows:

SetStatus (BaudrateME, −115200)

CSDC and COM310 ports have no associated baud rate per se. For these ports

the (synchronous) data is clocked at a rate that varies automatically according

to current traffic. They are not user configurable and LoggerNet’s Status

Table shows them as 115200.

14.2.6 LoggerNet Device Map Configuration

After adding the root PC COM (or other) port through which you wish to

communicate, add any communication devices needed, a PakBusPort, and the

dataloggers. Figures 14.2-1A and14.2-1B can be RF4xx PakBus networks.

Note that RF4xx devices need not be represented in the map.

FIGURE 14.2-1A. Flat Map

1 2 ... 289 290 291 292 293 294 295 296 297 298 299 ... 323 324

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Campbell CR800 Specifikace Strana 294