FANUC Power Mate i-MODEL H CONNECTION MANUAL (HARDWARE)

B63173EN/03
6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
117
2) Digital output
This analog input module has four input channels. The digital output
block is a single 12bit output in the occupied input points of three
bytes. The output format is as follows:
7
D07Xm (even address)
0
6
D06
0
5
D05
CHB
4
D04
CHA
3
D03
D11
2
D02
D10
1
D01
D09
0
D00
D08Xm+1 (odd address)
Address within the module
D00 to D11 are 12bit digital output data. D00 corresponds to 2
0
weight and D11 to 2
11
weight.
D11 corresponds to the sign bit of a twos complement representation.
CHA and CHB represent an analog input channel. Thus, when the
PMC program reads the above two bytes, it can read from D11 to D00
the A/Dconverted data on the input channel represented by CHA and
CHB. For an explanation of CHA and CHB, see Channel selection
below.
3) Channel selection
This analog input module requires that the PMC program specify
which of the four channels is to output data to the digital output block.
The DOs for this specification are CHA and CHB in the occupied
output points of two bytes. They are mapped as follows:
7
XYn
X
6
X
X
5
X
X
4
X
X
3
X
X
2
X
X
1
X
CHB
0
X
CHAYn+1
Address in the module
By writing one of the following values to each of CHA and CHB, the
corresponding channel is selected and the A/Dconverted data on the
channel and the data for the selected channel are read as DI data. The
Xs above are unused bits and, therefore, either 1 or 0 may be written.
CHB CHA Selected channel
0 0 Channel 1
0 1 Channel 2
1 0 Channel 3
1 1 Channel 4

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