38
CHAPTER 4
Performing Advanced Functions
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.
RF incoming
RF outgoing
Digibyte
Pulse Counter I/O B
Pulse Counter I/O A
Battery
D1 D2
D3 D4
D5
D6 D7 D8 D9 D10 D11 D12 D13
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