B&B Electronics ADAM-6066 - Manual - Manual (Page 134)

ADAM-6000 Series User Manual 124
6.4 ASCII Commands for ADAM-6000 Modules
For users do not familiar to Modbus protocol, Advantech offers a func-
tion library as a protocol translator, integrating ASCII command into
Modbus/TCP structure. Therefore, users familiar to ASCII command can
access ADAM-6000 easily. Before explaining the structure of ASCII
command packed with Modbus/TCP format. Lets see how to use an
ASCII command and how many are available for your program.
6.4.1 Syntax of ASCII
Command Syntax: [delimiter character][address][channel][com-
mand][data][checksum][carriage return] Every command begins with a
delimiter character. There are two valid characters:
$ and # The delimiter character is followed by a two-character address
(hex-decimal) that specifies the target system. The two characters follow-
ing the address specified the module and channel.
Depending on the command, an optional data segment may follow the
command string. An optional two-character checksum may also be
appended to the command string. Every command is terminated with a
carriage return (cr).
The command set is divided into the following five categories:
• System Command Set
• Analog Input Command Set
• Analog Input Alarm Command Set
• Universal I/O Command Set
• Digital I/O Command Set
Every command set category starts with a command summary of the par-
ticular type of module, followed by datasheets that give detailed informa-
tion about individual commands. Although commands in different
subsections sometime share the same format, the effect they have on a
certain module can be completely different than that of another. There-
fore, the full command sets for each type of modules are listed along with
a description of the effect the command has on the given module.
Note: All commands should be issued in UPPERCASE
characters only!