Omron TJ2-MC64 - PROGRAMMING Programming Manual page 220

Communication protocols
Note
The Host Link protocol supports only C commands. It does not
support FINS.
The Host Link Master protocol supports the commands only in single frame.
The following table shows how you can use the Host Link protocol with the
BASIC commands, and for which CPU unit operating mode (RUN, MON or
PROG) the command is valid.
/i
Header Name
code
RR CIO AREA READ
RL LR AREA READ
RH HR AREA READ
RD DM AREA READ
RJ AR AREA READ
RE EM AREA READ
WR CIO AREA WRITE
WL LR AREA WRITE
WH HR AREA WRITE
WD DM AREA WRITE
WJ AR AREA WRITE
WE EM AREA WRITE
SC STATUS CHANGE
TS TEST
MM PC MODEL READ
XZ ABORT
(command only)
** INITIALIZE
(command only)
PROGRAMMING MANUAL
BASIC command RUN MON
required
HLM_READ Valid Valid
HLM_READ Valid Valid
HLM_READ Valid Valid
HLM_READ Valid Valid
HLM_READ Valid Valid
HLM_READ Valid Valid
HLM_WRITE Not valid Valid
HLM_WRITE Not valid Valid
HLM_WRITE Not valid Valid
HLM_WRITE Not valid Valid
HLM_WRITE Not valid Valid
HLM_WRITE Not valid Valid
HLM_COMMAND Valid Valid
HLM_COMMAND Valid Valid
HLM_COMMAND Valid Valid
HLM_COMMAND Valid Valid
HLM_COMMAND Valid Valid
Header Name
code
IC Undefined command
(response only)
Caution
You must execute the Host Link master commands from one pro-
gram task only to avoid any multi-task timing problems.
PRG
Caution
The Host Link master commands provide the tools to exchange
Valid
data with the Host Link slave. The user program must contain
Valid
proper error handling routines to deal with communication failure
and perform retries if necessary.
Valid
Valid
End codes
Valid
These are the end codes defined in the HLM_STATUS parameter:
Valid
/i
Valid
End code Description
Valid
$00 Normal
completion
Valid
$01 Not executable
Valid
in RUN mode
Valid
Valid
Valid $13 FCS error
Valid
Valid
Valid
Valid
BASIC command RUN
required
- Valid
Probable cause Solution
No problem exists. N/A
The command that was sent can- Check the relation
not be executed when the PC is between the com-
in RUN mode. mand and the PC
mode.
The FCS is wrong. Influence from noise,
transfer the command
again.
MON PRG
Valid Valid
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