Campbell RF410 Manual de instrucciones descargar pdf (Pagina 43)

PakBus Networking Guide

5.1.2 Addresses

All PakBus network RF400 Series should be configured with the same Network

Address and Radio Address. PakBus devices that are in-range ‘hear’ every

packet transferred, but they only respond to the packets addressed to them.

Default addresses usually work. If you are in a busy RF400 area, you can

reduce retries by choosing non-default Network and Radio Addresses.

5.1.3 Hopping Sequence

All PakBus network RF400 Series should be configured with the same Hopping

Sequence (sometimes shortened to hop table).

If activity on the RF400s’ green LED indicates substantial same-hop-table

activity from a nearby network, you should consider changing to a more free

hopping sequence to reduce retries.

5.1.4 Standby Mode

Normally the RF400 is configured for “<24 mA always on.” Other Standby

Modes are possible, for example, the default “< 4 mA ½ sec cycle” and “< 2

mA 1 sec cycle”standby modes work for some configurations if power budget

is an issue. Response times are a little better when RF400s are configured for

“<24 mA always on” since the RF400 receiver is always active instead of

cycling in and out of sleep mode. Each RF400 and CR200 Series radio in the

network should have the same Standby Mode (Radio Power Mode) setup.

5.2 MD485

The MD485 allows multiple PakBus devices to be cabled together on an RS-

485 bus (one twisted pair with shield) instead of using radio communications.

Maximum range is around 4000 feet of total cable length.

5.2.1 Communication Mode

In a PakBus network the Communication Mode must be configured as “PakBus

Networking” to enable the low-level collision avoidance protocol.

5.2.2 Active Ports

The two ports to set active are RS-485 and either CS I/O or RS-232 according

to the capability of the PakBus datalogger and your usage of the CS I/O port.

5.2.3 Baud Rates

This setting will usually be 9600 but can be greater if the datalogger allows.

5.3 NL100

Use Telnet or Terminal emulator to configure an NL100 (see user’s manual).

The NL100 can be used in transparent mode (TcpSer) where, for example, it’s

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Campbell RF410 Manual de instrucciones Pagina 43