KROHNE MFC 010 C Converter - Manual (Page 33)

MFC010 Interface Manual 31
6.10 16 (10
16
): Preset Multiple Registers
This function permits the user to set the v alue of a num ber of c onsecutive H olding r egisters. T his
command function must be used to write to variables which occupy multiple consecutive registers such as
floating point and long integer variables (See Section 7.5 on page 49 for details of the individual
registers). Some of the Variables which occupy single (16 bit) registers c annot be s et us ing t his
command, the Password registers (1001-1003) in particular. Command Function 06 (06
16
) must be used
to set these registers. The format of the Master request telegram for this function should be as follows.
Request
Character
Field For Example
1 Slave Address 01
16
Request to Slave ID 1
2 Function 10
16
“Preset Multiple Registers”
3 Starting Address Hi 03
16
Starting Register Address = 1020
4 Starting Address Lo FB
16
5 No. of Registers Hi 00
16
Number of Registers = 2
6 No. of Registers Lo 02
16
7 Byte Count 04
16
No of Bytes = 4 ( 2 x 2 )
8 Data Hi 00
16
Set Register 1020 = 17
9 Data Lo 11
16
10 Data Hi 00
16
Set Register 1021 = 18
11 Data Lo 12
16
12 CRC Lo 79
16
CRC Checksum
13 CRC Hi A0
16
The MFC010 will respond to such a request with a telegram formatted as follows.
Response
Character
Field For Example
1 Slave Address 01
16
Response from Slave ID 1
2 Function 10
16
“Preset Multiple Registers”
3 Starting Address Hi 03
16
Starting Register Address = 1020
4 Starting Address Lo FB
16
5 No. of Registers Hi 00
16
Number of Registers = 2
6 No. of Registers Lo 02
16
7 CRC Lo 30
16
CRC Checksum
8 CRC Hi 7D
16