Mitsubishi Electric MELSEC-Q/L - Display Instructions

2 INSTRUCTION TABLES
2.5 Application Instructions
61
2
Display instructions
Debugging and failure diagnosis instructions
Category Instruction
symbol
Symbol Processing details Execution
condition
Number
of basic
steps
Subset Reference
ASCII print PR • Outputs ASCII code from
device designated by (S) to
00H to output module.
3  Page 512
PR • Outputs ASCII code of 8
points (16 characters) from
device designated by (S) to
output module.
PRC • Converts comments from
device designated by (S) to
ASCII code and outputs to
output module.
Page 515
Reset LEDR • Resets an annunciator. 1  Page 518
Category Instruction
symbol
Symbol Processing details Execution
condition
Number
of basic
steps
Subset Reference
Checks CHKST • The CHK instruction is
executed when CHKST is
executable.
• Jumps to the step following
the CHK instruction when
CHKST is in a non-
executable status.
1  Page 520
CHK • During normal conditions
 SM80: OFF, SD80: 0
• During abnormal conditions
 SM80: ON, SD80:
Failure No.
CHKCIR • Starts update in the ladder
pattern being checked by
the CHK instruction.
1  Page 524
CHKEND • Ends update in the ladder
pattern being checked by
the CHK instruction.
When SM701 is OFF
PR S D
When SM701 is ON
PR S D
PRC SD
LEDR
CHKST
Check condition
CHK
CHKCIR
CHKEND