Lumel P18D, Руководство пользователя, Страница: 18 / 32

18
Reading-out n-registers (code 03h)
Example 1. Reading-out 2 registers starting with the register with the
float(32 bits) 1D4Dh (7501) address, (register values 25.68, 20.25.)
Request:
Device
address
Function
Register address Number of registers
Control sum
CRC
Hi Lo Hi Lo
01h 03h 1Dh 4Dh 00h 02h 52h 70h
Response:
Table 5
Device
ad-
dress
Fun-
ction
Num-
ber
bytes
Value from the register
1DB0 (7501)
Value from the register
1DB1 (7502)
Control
sum
CRC
MSB LSB MSB LSB
01h 03h 08h 41h CDh 70h A4h 41h A2h 00h 00h 83h D0h
Table 6
Recording a single register (code 06h)
Example 2. Recording the value 78h (120) in the register FA1h (4001)
Request:
Device
address
Function
Register address Register value
Control sum
CRC
Hi Lo Hi Lo
01h 06h 0Fh A1h 00h 78h DBh 1Eh
Table 7
Response:
Device
address
Function
Register address Register value
Control sum
CRC
Hi Lo Hi Lo
01h 06h 0Fh A1h 00h 78h DBh 1Eh
Table 8