Mitsubishi Electric MELSEC-Q Series Programming Manual page 88

Operation Error
Error code Description
4101 • If exceeding the maximum step No. (8191) when block specification is not made (for the Universal model QCPU or LCPU)
• If specifying the stop which does not exist when block specification is not made (for the Universal model QCPU or LCPU)
Program Examples
• The following program reads 32 active steps, starting from step 0 of block 3, to D0 and D1 when X0 turns ON.
When step is designated by operation output of block 3
When step is designated by operation output of other than block 3
When step is designated by sequence program
■Related Instructions
SFC control instructions
• Block switching instruction (BRSET) (Refer to  Page 103 Block switching instruction (BRSET).)
• Step operation status check instruction (a, b, &a, &b, |a, |b) (Refer to  Page 76 Step operation status check instructions
(a, b, &a, &b, |a, |b) [Sn/BLm\Sn].)
• Active step batch readout instruction (BMOV) (Refer to  Page 87 Active step batch readout (BMOV).)
4 SFC PROGRAM CONFIGURATION
86
4.4 Controlling SFC Programs by Instructions (SFC Control Instructions)