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Block Programming Instructions Section 3-32
3-32 Block Programming Instructions
This section describes block programs and the block programming instruc-
tions.
3-32-1 Introduction
Block Programs
Up to 128 block programs within the overall user program (all tasks) with the
CS/CJ-series. The execution of each block program is controlled by a single
execution condition. All instructions between BPRG(096) and BEND<801) are
executed unconditionally when the execution condition for BPRG(096) is
turned ON. The execution of all the block programming instructions except for
BPRG(096) is not affected by the execution condition. This allow program-
ming that is to be executed under a single execution condition to be grouped
together in one block program.
Each block is started by one execution condition in the ladder diagram and all
instructions within the block are written in mnemonic form. The block program
is thus a combination of ladder and mnemonic instructions.
Block programs enable programming operations that can be difficult to pro-
gram with ladder diagrams, such as conditional branches and step progres-
sions.
Instruction Mnemonic Function code Page
BLOCK PROGRAM BEGIN BPRG 096 1191
BLOCK PROGRAM END BEND 801 1191
BLOCK PROGRAM PAUSE BPPS 811 1193
BLOCK PROGRAM RESTART BPRS 812 1193
CONDITIONAL BLOCK EXIT
(NOT)
EXIT (NOT) 806 1199
IF (NOT) IF (NOT) 802 1196
ELSE ELSE 803 1196
IF END IEND 804 1196
ONE CYCLE AND WAIT (NOT) WAIT (NOT) 805 1202
HUNDRED-MS TIMER WAIT TIMW (BCD) 813 1206
TIMWX (binary) 816
COUNTER WAIT CNTW (BCD) 814 1209
CNTWX (binary) 818
TEN-MS TIMER WAIT TMHW (BCD) 817 1212
TMHWX
(binary)
815
LOOP LOOP 809 1215
LOOP END (NOT) LEND (NOT) 810 1215
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