Omron GRT1-PNT - DATASHEET 2 Operation Manual page 56

Device name setting and I/O allocation
3-1-4 SmartSlice I/O allocation to the GRT1-PNT unit
I/O Allocation Example
Input area
Word
15 8
Communication Unit status
First word
#3 #2
Unused
+1
+2
#4
+3
Some areas may be unused
when data is mapped.
44
The SmartSlice I/O Units' I/O data is mapped on the I/O memory of the GRT1-
PNT, from which it is transferred to the PROFINET IO Controller unit. This
allocation is done automatically and determined by the SmartSlice I/O Unit's
type. The figure below shows this mapping.
I/O Data is mapped in the order in which
the Units are connected, from low to high.
I/O Units with bit allocation are mapped from
the rightmost to leftmost bit, in 2-bit units.
I/O Units with word allocations are mapped
from the low to high word address
Note 1 One block of mapped Output data (from the Controller Unit) and one block of
mapped Input data are maintained in the GRT1-PNT and transferred to/from the
Controller Unit.
2 The first Input data word always contains the SmartSlice I/O Status word.
3 The GRT1-END-M End Unit must be configured in the SmartSlice I/O allocation. It
contains two input bits and should be allocated to the last slot of the configuration.
4 Bit-sized SmartSlice I/O Units, e.g. GRT1-ID4, GRT1-OD4 are grouped together in
words. They are mapped from the right-most bit to the left-most bit, in 2-bit units.
5 Word-sized SmartSlice I/O Units, e.g. GRT1-AD2, GRT1-DA2V are mapped to one
or more words, from the low to the high word address.
6 Total size of mapped I/O data can be 64 words output and 64 words input.
I/O data is mapped to the GRT1-PNT Units I/O data blocks in the same order
the SmartSlice I/O Units are connected to the PROFINET IO Communication
Unit, regardless of the I/O Units' models.
The example below shows the I/O data mapping to the Input / Output blocks.
#1
Communi-
cation ID4
Unit
0
#1
I/O memory
16
Order of allocation
D C
PROFINET
Communication
Unit
#2 #3 #4 #5
ID4 ID4 AD2 OD4
0
8
(1) Communication Unit
B A
(2) Each SmartSlice I/O Unit's I/O
data.
E
(3) SmartSlice I/O Unit
network participation
status.
B C D
A
SmartSlice I/O Units
#6
ROS2
Word
15
First word Unused
Section 3-1
E
Connected order
Output area
0
8
#6 #5