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Adcon A720 User Manual

Page 38

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CHAPTER 4

Performing Advanced Functions

38

between the frames 38 and 39 is that the later accomodates for 12
bit analog values for the sensor sampling inputs and 16 bit
counters for the pulse counter inputs. In addition, the correspon-
dence between input analog and digital ports and their position in
the frame differs.

The composition of the data block of a frame type 38 (the bytes
marked as d1, d2... dn) is depicted in Figure 9, a type 39 frame in
Figure 10 while the digibyte is depicted in Figure 11 and
Figure 12.

Figure 9. Frame 38 description

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10 D11 D12 D13

RF incoming
RF outgoing
Digibyte
Pulse Counter I/O B
Pulse Counter I/O A
Battery

Cabling 1 I/O B
Cabling 2 I/O B
Cabling 3 I/O B
Cabling 1 I/O A
Cabling 2 I/O A
Cabling 3 I/O A

Reserved

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