User's Manual

Using terminal commands

The data block returned will typically contain a number of data frames (telegrams).

The structure of a block is as follows:

dd mm yyyy hh mm ss si ft d1 d2 ... dn dd mm yyyy ... dn cs

where:

• dd mm yyyy is the date

• hh mm ss is the time

• si is the size of the frame (21 for frame type 37, 13 for frame type 38)

• ft is the frame type (37 for the A733, 38 for A732 and A731)

• d1 d2 ... dn are the data values (the frame content)

• cs is a 16-bit checksum obtained by summing the bytes and discarding the

carries over 0xFFFF

The A733 devices always respond with a type 37 data frame. The A731 and A732

respond with a type 38. The composition of the data blocks of such frames (the

values marked as d1, d2... dn) is depicted in Fig. 15 while the digibyte is depicted

in Fig. 16.

A733 A732 / A731

RF incoming RF incoming

RF outgoing RF outgoing

Digibyte Digibyte

I/O A Pulse Counter I/O A Pulse Counter

I/O B Pulse Counter I/O B Pulse Counter

I/O C Pulse Counter Battery

I/O D Pulse Counter I/O A Cabling 1

Battery I/O A Cabling 2

I/O A Cabling 1 I/O A Cabling 3

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

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

I/O B Cabling 1 I/O B Cabling 3

I/O B Cabling 2

I/O B Cabling 3

I/O C Cabling 1

I/O C Cabling 2

I/O C Cabling 3

I/O D Cabling 1

I/O D Cabling 2

I/O D Cabling 3

Fig. 15: Frame 37 (left) and Frame 38 (right) description