Instruction manual

4. SERVO SYSTEM CPU DEVICES
4 − 15
(3) PC link communication error flag (M2034)
........................................................................Signal sent from PCPU to SCPU
This flag comes ON when an error occurs during personal computer linking
communication. When M2034 comes ON the error code is stored in the
personal computer link communication error code storage register (D9196).
The devices dedicated to personal computer communication are indicated
below.
Table 4.1 PC link communication device list
Device Name Contents Device Number
PC link
communication error
flag
OFF: No PC link communication error
ON : PC link communication error detected
(Flag changes to OFF if normal communication is
restored.)
M2034
PC link
communication error
codes
00: No error
01: Receiving timing error
02: CRC error
03: Communication response code error
04: Receiving frame error
05: Communication task start error
(Error codes are reset to 00 by normal
communication restart.)
D9196
Table 4.2 PC link communication error code list
Error Codes
stored in D9196
Error Contents Correction Method
01
PC link communication
receiving packet did not
arrive.
Receiving packet arrival
timing was late.
⋅
Confirm that the personal computer power is
on.
⋅
Check the communication cable connection.
⋅
Check for communication cable burnout.
⋅
Confirm that A30BD-PCF/A30CD-PCF is
properly placed.
02
The receiving packet CRC
code is incorrect.
⋅
Confirm that there is nothing causing noise in
the vicinity.
⋅
Check the communication cable connection.
⋅
Check for communication cable burnout.
03
The receiving packet data ID
is incorrect.
⋅
Confirm that A30BD-PCF/A30CD-PCF is
properly placed.
⋅
Replace the A30BD-PCF/A30CD-PCF.
04
The number of the frame
received is incorrect.
⋅
Check the communication cable connection.
⋅
Check for communication cable burnout.
⋅
Confirm that there is nothing causing noise in
the vicinity.
05
The communication task on
the personal computer side
has not been started.
⋅
Start the communication task on the personal
computer side.