Coding Right-Hand Instructions - Omron SYSMAC CV Series Operation Manual

Coding Right-hand Instructions

5-5

Coding Right-hand Instructions

Immediate refreshing and up or down differentiation can be combined in a single
instruction. Immediate refresh instructions cannot be used for I/O points on
Units mounted to Slave Racks in a SYSMAC BUS or SYSMAC BUS/2 Remote
I/O System.
Writing mnemonic code for ladder instructions is described in Section 4 Writing
Programs . Converting the information in the ladder diagram symbol for all other
instructions follows the same pattern, as described below, and is not specified
for each instruction individually.
The first word of any instruction defines the instruction and provides any defin-
ers. The bit operand is also placed on the same line as the mnemonic for some
instructions with certain operands. All other operands are placed on lines after
the instruction line, one operand per line and in the same order as they appear in
the ladder symbol for the instruction.
The address and instruction columns of the mnemonic code table are filled in for
the instruction word only. For all other lines, the left two columns are left blank. If
the instruction requires no definer or bit operand, the data column is left blank for
first line. It is a good idea to cross through any blank data column spaces (for all
instruction words that do not require data) so that the data column can be quickly
scanned to see if any addresses have been left out.
If a CIO address is used in the data column, the left side of the column is left
blank. If any other data area is used, the data area abbreviation is placed on the
left side and the address is placed on the right side. If a constant is to be input,
the number symbol (#) is placed on the left side of the data column and the num-
ber to be input is placed on the right side. Any numbers input as definers in the
instruction word do not require the number symbol on the right side.
When coding an instruction that has a function code, be sure to write in the func-
tion code, which can be used when inputting the instruction via the Peripheral
Device. Also be sure to designate differentiated instructions with the j or i sym-
bol.
Section 5-5
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