Allen-Bradley 1769-SDN - Page 64

Publication 1769-UM009B-EN-P - May 2002
5-4 DeviceNet I/O Image
Slave Device Idle Array
The slave device idle array contains 64 bits of data. Each bit indicates
the state of a slave device. A bit value of 0 represents a non-idle mode
or that the slave is not present in the scanlist. A bit value of 1
represents idle mode where the slave node is present in the scanlist.
Table 5.4 Slave Device Configuration Comparison to Scanner Configuration
Input Word Bit 0 to Bit 15 Description
6
(1)
(1)
Bit 0 corresponds to Node 0, Bit 1 corresponds to Node 1 … Bit 15 corresponds to Node 15.
Node 0 to Node 15 Bit ON (1) = Slave node mismatch
Bit OFF (0) = Slave node match
7
(2)
(2)
Bit 0 corresponds to Node 16, Bit 1 corresponds to Node 17 … Bit 15 corresponds to Node 31.
Node 16 to Node 31
8
(3)
(3)
Bit 0 corresponds to Node 32, Bit 1 corresponds to Node 33 … Bit 15 corresponds to Node 47.
Node 32 to Node 47
9
(4)
(4)
Bit 0 corresponds to Node 48, Bit 1 corresponds to Node 49 … Bit 15 corresponds to Node 63
Node 48 to Node 63
Table 5.5 Slave Device Status
Input Word Bit 0 to Bit 15 Description
10
(1)
(1)
Bit 0 corresponds to Node 0, Bit 1 corresponds to Node 1 … Bit 15 corresponds to Node 15.
Node 0 to Node 15 Bit ON (1) = idle
Bit OFF (0) = non-idle
11
(2)
(2)
Bit 0 corresponds to Node 16, Bit 1 corresponds to Node 17 … Bit 15 corresponds to Node 31.
Node 16 to Node 31
12
(3)
(3)
Bit 0 corresponds to Node 32, Bit 1 corresponds to Node 33 … Bit 15 corresponds to Node 47.
Node 32 to Node 47
13
(4)
(4)
Bit 0 corresponds to Node 48, Bit 1 corresponds to Node 49 … Bit 15 corresponds to Node 63
Node 48 to Node 63