Analog Output Module Command Set
6-
4
ADAM 4000 Series User’s Manual
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Response !AA(cr) if the command is valid.
?AA(cr) if an invalid parameter was entered or the INIT*
terminal was not grounded when changing baud rate or
checksum settings was attempted.
There is no response if the module detects a syntax or
communication error, or even if the specified address does
not exist.
!
delimiter character indicates that a valid command is
received.
?
delimiter character indicates that the command is invalid.
AA (range 00-FF) represents the 2-character hexadecimal
address of an analog output module.
(cr) is the terminating character, carriage return (0Dh).
Table 6-1 Baud Rate Codes
Baud Rate
Code
Hex
Baud Rate
03 1200 bps
04
2400 bps
05
4800
bps
06
9600 bps
07
19.2 Kbps
08 38.4 Kbps
Table 6-2 Output Range Codes (Type Codes)
Output Ran
e Code
Hex
Output Ran
e
for ADAM-4021
30
0 to 20 mA
31 4 to 20 mA
32
0 to 10 V
NOTICE: An analog output module requires a maximum of 20
milliseconds to perform auto calibration and ranging after it is
reconfigured. During this time span, the module can not be
addressed to perform any other actions.
NOTICE:
All configuration parameters can be changed dynamically,
except the checksum and baud rate parameters. They can only
be altered when the INIT* terminal is grounded. (Refer to Baud
rate and Checksum in Chapter 2).
4021
