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62
Serial Communications
Section 4-1
End Code Summary
These are the end codes as they can be defined in the HLM_STATUS param-
eter.
Set-up Host Link Master
The SETCOM is required to set-up the serial communication port for the Host
Link Master protocol. After setting the following command:
SETCOM(baudrate,data_bits,stop_bits,parity,port,6)
the HLM_READ, HLM_WRITE and HLM_COMMAND commands can be
used to read and write data using Host Link.
WR
CIO AREA WRITE
HLM_WRITE
Not
Valid
Valid
Valid
WL
LR AREA WRITE
HLM_WRITE
Not
Valid
Valid
Valid
WH
HR AREA WRITE
HLM_WRITE
Not
Valid
Valid
Valid
WD
DM AREA WRITE
HLM_WRITE
Not
Valid
Valid
Valid
WJ
AR AREA WRITE
HLM_WRITE
Not
Valid
Valid
Valid
WE
EM AREA WRITE
HLM_WRITE
Not
Valid
Valid
Valid
SC
STATUS CHANGE
HLM_COMMAND
Valid
Valid
Valid
TS
TEST
HLM_COMMAND
Valid
Valid
Valid
MM
PC MODEL READ
HLM_COMMAND
Valid
Valid
Valid
XZ
ABORT (command
only)
HLM_COMMAND
Valid
Valid
Valid
**
INITIALIZE (com-
mand only)
HLM_COMMAND
Valid
Valid
Valid
IC
Undefined com-
mand (response
only)
-
Valid
Valid
Valid
Header
Code
Name
BASIC Command
required
CPU Unit Operating Mode
RUN
MON
PRG
End
code
Contents
Probably cause
Corrective measures
00
Normal completion
No problem exists
---
01
Not executable in RUN mode
The command that was sent cannot
be executed when the PC is in RUN
mode.
Check the relation between the com-
mand and the PC mode.
13
FCS error
The FCS is wrong
Most likely influence from noise,
transfer the command again.
14
Format error
The command format is wrong, or a
command that cannot be divided has
been divided, or the frame length is
smaller than the minimum length for
the applicable command.
Check the format and transfer the
command again.
15
Entry number data error
The data is outside the specified
range or too long.
Correct the command arguments
and transfer the command again.
18
Frame length error
The maximum frame length of 131
bytes was exceeded.
Check the command and transfer
the command again.
19
Not executable
Access right was not obtained.
Obtain access rights.
21
Not executable due to CPU Unit
CPU error
The command cannot be executed
because a CPU error has occurred
in the CPU Unit.
Cycle the CPU Unit’s power supply.