User's Manual

CHAPTER3

Performingconnectivitychecks

• 18 — attempt to insert a reserved device ID number (0 or 65535)

Realtimeclock

• 20 — incorrect time supplied (no conversion to time_t was

possible)

Radiointerface(includingGSM/GPRSModem)

• 30 — error at receive (CRC, etc.)

• 31 — unexpected frame received

• 32 — wrong length

• 33 — reserved

• 34 — reserved

• 35 — time-out (remote device not responding)

• 36 — receiver busy (for example, currently performing a polling

series)

• 37 — time stamp of a frame is too far in the future

• 38 — general modem error

• 39 — “unknown modem” error

Notifications

• 40 — request to read a notification when no notification is

pending

Performingconnectivitychecks

If you want to insert an RA440 Wireless Radio Modem into an existing

Adcon radio network, you should consider performing connectivity

checks before finishing installation of the device. Connectivity checks

are similar to the RTU connection checks. Before performing these

checks, you must have following items prepared:

• the A440 Serial number (printed on the type plate of the RA440)

• a serial communication cable (item number 200.720.540 from

your Adcon distributor)

The following instructions show you how to perform the connectivity

check:

1. After you check the connection to the A850 Telemetry Gateway

using the LED tool, disconnect the LED tool. A few seconds later,

connect your serial communication cable to the SOLAR CELL

connector.

2. Make a broadcast by entering the <A440_ID> B command, where

A440_ID is the serial number of your A440.

3. Wait at least 15 seconds.