
L. MIGRATION OF LADDER PROGRAMS
BETWEEN DIFFERENT MODELS
B–61863E/15
APPENDIX
1534
D If you want to change the model PMC–SA5/SB5/SB6 to model
PMC–SB7, change the item ”PMC TYPE” to ”PMC–SB7”.
D If the mnemonic file has insufficient parameters for PMC–SB7,
the initial values are set with conversion for the source program.
D The mnemonic file format of the system parameter for
PMC–SB7 is as follows.
%@0
2 BINARY
3 NO
4 PMC–SB7
7 150
%
2. Counter type (BINARY or BCD)
3.Operator panel (YES or NO)
4. PMC type (PMC–SB7)
7. Ladder execution ratio (150%)*
NOTE
The default value is 150. The meaning is described in ”(7)
Addition of LADDER EXEC in the system parameter
(PMC–SB7)”
iv) Convert the mnemonic file to the source program and overwrite
it on the new source program for PMC–SB7.
(3)The ladder programs depend on execution time (PMC–SB7)
As the execution speed of instructions become fast, the following
items about execution timing may be changed.
– The execution cycle of both first and second level of ladder
– The timing of the execution cycle of first level of ladder according
to the partition of second level ladder
– The timing between ladder execution and I/O transfer
The working test of the machine is necessary.
(4)Change of sequence program size (PMC–SB7)
As described in Section 3.4, the used size of system and
symbol/comment are changed. Generally, the program size for
PMC–SB7 becomes bigger than one for PMC–SA5/SB5/SB6 even if
the same source program is converted. If the program size exceed the
capacity of the flash ROM, please change the ladder step option or
reduce the symbol and comment.
(5)Operation/display of screens (PMC–SB7)
The operation of the PMC screens for PMC–SB7 is almost same as
PMC–SA5/SB5/SB6. Some screens, however, are changed for the
improvement of operations and some functions. Please refer to
”FS16i/18i/21i/0i–B PMC–SA1/SB7 MANIPULATION”.
(6)Input/output of PMC parameters (PMC–SB7)
Through the expansion of size of the PMC parameters (T/C/K/D
areas), the data format of the PMC parameters on PMC I/O screen is
changed. As for the details of the data format, refer to ”4
PMC–MODEL SB7 Parameter Format”.
– The PMC parameters output from PMC–SA5/SB5/SB6 can be
input to PMC–SB7.