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IM 34M06P15-03E 2nd Edition: Jan. 31, 2012-00
z Discrete Inputs
Discrete inputs are associated with input relays (X) and special relays (M).
Discrete Inputs
(00001 to 65536)
F020602.VSD
Input Relays
X
(X00201 to X71664)
19984
65536
00001
00064
Special Relays
M
(M00001 to M09984)
00065
08192
08193
10000
10001
19985
Figure 2.6.2 Associations of Discrete Inputs with Internal Relays (X) and Special Relays (M)
X00201 is associated with input 00065.
The input device number associated with an input relay is calculated using the following
formula.
Input device number = Unit number x 1024
+ (Slot number - 1) x 64
+ Terminal number
M00001 is associated with input 10001.
The input device number associated with a special relay is calculated using the following
formula.
Input device number = Special relay number + 10000
Tip
$0040 is used in the PDU for specifying the input number 00065 corresponding to X00201.
$2710 is used in the PDU for specifying the input number 10001 corresponding to M0001.
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