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■ DATA ALLOCATION MODE 2
• Output Data
The figure below shows the allocation of data sent from
the power / network module to the master.
Module
15
RWr n+0
0_CH1
0_CH2
+2
1_CH1
1_CH2
+4
2_CH1
2_CH2
+6
3_CH1
3_CH2
+8
4_CH1
4_CH2
+10
5_CH1
5_CH2
+12
6_CH1
6_CH2
+14
7_CH1
7_CH2
+62
31_CH1
31_CH2
16 × m (m = cyclic expansion setting) data areas are available for the R8-NC3.
Field input data is set at the module's output data area. The input data area is also secured though not used for an input
module. Above figure shows the area when cyclic expansion is "4", however the module address is up to 15 when cyclic ex-
pansion is "2".
• Module Status
RX (n+0) 0 through RX (n+1) 15 indicate that modules are mounted in each slot.
0: mounted; 1:not mounted.
15
RX(n+0)
• Ready Signal
When cyclic expansion is "2", RX (n+13) 11 is assigned to Ready signal, when cyclic expansion is "4", RX (n+27) 11 is assigned
to Ready signal, which turns to "1" when the internal bus is in normal conditions.
• Input Data
The figure below shows the allocation of data sent from
the master to the power / network module.
0
RWw n+0
0
RX(n+1)
Module 0
Module 1
Module 2
Module 15
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: + 81 ( 6 ) 6659-8201 Fax: + 81 ( 6 ) 6659-8510 E-mail: info@m-system.co.jp
Module
15
0_CH1
0_CH2
+2
1_CH1
1_CH2
+4
2_CH1
2_CH2
+6
3_CH1
3_CH2
+8
4_CH1
4_CH2
+10
5_CH1
5_CH2
+12
6_CH1
6_CH2
+14
7_CH1
7_CH2
+62
31_CH1
31_CH2
15
R8-NC3
0
0
Module 16
Module 17
Module 18
Module 31
EM-9726 P. 6 / 7
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