Omron CS1W-MCH71 Operation Manual page 423

Overview
Note
378
No. Name
P1AA01 Physical axis
setting
Custom I/O Area Allocation
The Custom I/O Areas (brevity codes: a_A to a_H) are the areas used to
exchange custom data between the CPU Unit and MC Unit. In the Custom I/O
Areas, there are eight general I/O areas A to H, and a size of 1 to 160 words
can be specified for each area.
(1) Make sure that values of the data are appropriate for operations.
(2) Make sure to confirm the safety of devices prior to changing the allocation
areas.
There are two methods that can be used to allocate the customer I/O areas.
Bit 8 of system parameter P00004 is used to set the method to be used.
Fixed I/O Variable Areas (P00004 Bit 8 = 0)
For general I/O area A, the number of transferred words is specified with
[PORT_A No. of transferred words (bits 00 to 07 of m+4)] of [General I/O area
range setting] in the allocated DM area. The area type in the CPU Unit is
specified with [PORT_A Area type (bits 08 to 14 of m+4)]. In addition, the
transfer direction is specified with [PORT_A Direction]. The first address in the
CPU Unit is specified with [PORT_A First address (m+5)].
In the MC Unit, the custom I/O areas can be treated as I/O variables in the
motion program, when the transfer direction is [MC Unit to CPU]: output vari-
ables; when transfer direction is [CPU Unit to MC Unit]: input variables.
Area Input variable
General I/O A IW0B00
General I/O B IW0BA0
General I/O C IW0C40
General I/O D IW0CE0
General I/O E IW0D80
General I/O F IW0E20
General I/O G IW0EC0
General I/O H IW0F60
Name
PORT_A No. of Number of words transferred for general I/O area A
transferred words
1 to 160 words
Port_A Area type CPU Unit area type for General I/O A:
0: Not used (no transfer).
1: CIO
2: WR
3: DM
4: EM (fixed at bank 0)
5 and higher: Reserved for system.
Port_A Direction Transfer direction for General I/O A:
0: MC Unit to CPU Unit
1: CPU Unit to MC Unit
Port_A First Address CPU Unit first address for general I/O A:
0000H to (Upper limit varies depending on Port_A Area type.)
Purpose
The greatest axis number that is going to be used
determines the number of allocated.
Output variable
OW0B00
OW0BA0
OW0C40
OW0CE0
OW0D80
OW0E20
OW0EC0
OW0F60
Function
Section 7-1