DMC-40x0 Command Reference IH • 125
_IHh3 contains a 0 if the ARP was successful
contains a 1 if it has failed or is still in progress
_IHh4 contains a 1 if the master controller is waiting for acknowledgment from the slave
after issuing a command.
contains a 2 if the master controller received a colon from the slave after issuing a
command.
contains a 3 if the master controller received a question mark from the slave after
issuing a command.
contains a 4 if the master controller timed-out while waiting for a response from the
slave after issuing a command.
USAGE: DEFAULTS:
While Moving No Default Value -----
In a Program Yes Default Format -----
Command Line Yes
Controller Usage
ALL CONTROLLERS
RELATED COMMANDS:
IA Internet Address
EXAMPLES:
IHA=251,29,51,1 Open handle A at IP address 251.29.51.1
IHA= -2095238399 Open handle A at IP address 251.29.51.1
Note: When the IH command is given, the controller initializes an ARP on the slave device before opening
a handle. This operation can cause a small time delay before the controller responds.
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