IDEC FC4A-C10R2 User Manual page 384

23: I M
NTELLIGENT ODULE
Intelligent Module Access Status Code
The data register designated as STATUS stores a status code to indicate the operating status and error of the intelligent
module access operation. When status code 1, 3, or 7 is stored, take a corrective measure as described in the table below:
Status
Status
Code
0 Normal
1 Bus error
3 Invalid module number
7 Excessive multiple usage
STPA Execution during Program Download
When downloading a user program, the CPU module is automatically stopped as default. Depending on the timing of the
initiation of the download and the total time to execute all STPA Read and Write instructions, some of the STPA instruc-
tions may not be executed. If this is the case, manually stop the CPU module. After more than 1 second, initiate user pro-
gram download as shown in the chart below.
Automatic Stop Sequence
CPU module
STPA instructions
Manual Stop Sequence
CPU module
STPA instructions
23-6
A I
CCESS NSTRUCTIONS
Intelligent module access is normal.
The intelligent module is not installed correctly.
Power down the MicroSmart modules, and re-install the intelli-
gent module correctly.
The designated module number is not found.
Confirm the intelligent module number and correct the program.
More than 64 STPA READ and STPA WRITE instructions are used.
Eliminate the excess instructions.
Initiate download
Automatic stop
Power up
Run
One cycle to execute all STPAs
Manual stop
Power up
Run
One cycle to execute all STPAs
« FC4A M
Description
Actual start
to download
Stop
Executed Not executed
Initiate download
Stop
More than 1 sec
Executed
S U ' M
ICRO MART SER S ANUAL
»
RUNA STPA
X X
X X
X X
— X