NAiS FP Series Hardware Manual page 100

FP0 Hardware
,
Example 2:
Remote I/O system in which the FP0 Control Unit has one FP0
I/O Link Unit. (I/O Link error flag is valid.)
WY2,3
WX2,3
(X20~3E)
(FP0)
[X3F is an I/O Link error flag]
The difference from example 1 is that the MSB (most
significant bit) of 2 words input (here X3F) is the I/O Link error
flag. This error flag indicates the communication condition
between this I/O Link Unit and the master unit.
The relationship of Inputs/Outputs between FP3/FP10SH and
FP0 in the above figure is shown below.
Output
Output
As this X3F is allocated as the I/O Link error flag in the FP0 I/O
map, Y67F and Y71F in the FP3/FP10SH I/O map are invalid.
Matsushita Electric Works (Europe) AG
FP3/FP10SH
Communication cable
Station No. 1
FP0
FP0
I/O Link Unit
Control Unit
WX64,65
WY66,67
(FP3/FP10SH)
FP3/FP10SH I/O map
Input WX64,65 (X640 to 65F)
WY66,67 (Y660 to 67E)
WX68,69 (X680 to 69F)
Input
WY70,71 (Y700 to 71E)
(Y67 and Y71F will be invalid)
The base word number that the Master Unit
at the left can control is 64.
(first
FP0
expan–
Control Unit
sion)
WY2,3
WX2,3
(X20~3E)
(FP0)
[X3F is an I/O Link error flag]
I/O Link Unit
Station No. 1
(first expansion)
Station No. 2
(first expansion)
5.4 Using the FP0 I/O Link Unit
Station No. 2
Station No. 2
(first
FP0
expan–
I/O Link Unit
sion)
WX68,69
WY70,71
(FP3/FP10SH)
FP0 I/O map
WY2,3 (Y20 to 3F)
WX2,3 (X20 to 3E)
X3F is an I/O Link error flag
WY2,3 (Y20 to 3F)
WX2,3 (X20 to 3E)
X3F is an I/O Link error flag
Output
Input
Output
Input
5-13