PmAdam - Driver for communication with ADAM devices

This driver serves for communication with devices of the ADAM 4000 and 5000 series. See also Communication with ADAM devices by the Advantech company. Before using this driver in the PROMOTIC application it is highly recommended to read the chapter: Communication using the PROMOTIC drivers. Basic properties of the driver: The communication includes all messages required for communication with devices of all types of the ADAM 4000 and 5000 series.

The messages are divided by individual devices (for each PLC the corresponding set of messages is defined) or the "ADAM type" = "Common ADAM" can be set in the message parameters window and thus all implemented messages for all ADAM devices are displayed.

To define non-implemented message we can set the "ADAM type" - "set by user" in the message parameters window. Then the message allows transmitting and receiving a common string value defined by the user after data setting.

Each message is positively identified by the description (see the message parameters window - "Message type") that equals to the identification in the original documentation. The only exception is the #aaSiBB(data) message that was separated by usage into two parts:

All ranges of variables are uniquely defined by the message type and its description. We distinguish integers with 1,2,4,8 characters.

Float values are encoded into the char string by the "Engineering Units" format - it means to 7 characters where a sign, 5 digits and a decimal period is included.

At the "Analog Output Command Set" message set of the ADAM 5000 series the #aaSiCj(data) and #aaSiCj6 messages occur that use another format of Float values. For encoding only 6 characters are required that don't include a sign and the decimal period is given by the fixed position in the third char.