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HPOD
Customer Commands
Second, if the controller sends an instruction to set a parameter to a particular value,
and, providing the value sent in the argument is valid, then the target will
acknowledge the message by replying with MUT= (with no message arguments).
The '?' code (target to controller) is only used as follows:
If the controller sends an instruction to set a parameter to a particular value, and, if
the value sent in the argument is not valid, then the target will acknowledge the
message by replying (for example) with MUT? (with no message arguments). This
indicates that there was an error in the message sent by the controller.
The '*' code (target to controller) is only used as follows:
If the controller sends an instruction to set a parameter to a particular value, and, if
the value sent in the argument is valid, however the target is in the wrong mode (e.g.,
standby mode in redundancy configuration) that it will not permit that particular
parameter to be changed at that time, then the target will acknowledge the message by
replying (for example) with MUT* (with no message arguments).
The '!' code (target to controller) is only used as follows:
If the controller sends an instruction code which the target does not recognize, then
the target will acknowledge the message by echoing the invalid instruction, followed
by the ! character with. Example: XYZ!
The '#' code (target to controller) is only used as follows:
If the controller sends an instruction code which the target cannot currently perform
because of hardware resource issues, then the target will acknowledge the message by
echoing the invalid instruction, followed by the # character. This response can only
occur if the operator sends two or more 'hardware configuration' type commands
without allowing adequate time between commands for the hardware to be
configured. For example, if the operator issued commands to change both the
frequency and the attenuation with less than 100 milliseconds between commands,
and if this response is returned, then the command has not been accepted and the
operator must resend the command.
4.13.5 M
ESSAGE
Arguments are not required for all messages. Arguments are ASCII codes for the
characters 0 to 9 (ASCII 48 to 57), period (ASCII 46) and comma (ASCII 44).
4.13.6 E
O
P
ND
F
Controller to Target: This is the 'Carriage Return' character (ASCII code 13)
Target to Controller: This is the two-character sequence 'Carriage Return', 'Line Feed'.
(ASCII code 13, and code 10.)
Both indicate the valid termination of a packet.
A
RGUMENTS
ACKET
4–7
Revision 1
MN/HPOD.IOM
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