REO REOVIB MFS 268 - Parameter Operation: Write Enable and Address Setup

REOVIB MFS 268
Operating Instructions EtherNet/IP - Programming
7
5.2 Parameter Operation
In parameter operation, the specific unit parameters can be monitored and adjusted.
A `write` enable must be transmitted before parameters can be altered. On closing, the `write` enable
must be cancelled.
A `read` request must be sent before data can be read.
Word 3 in the acknowledge is always `C0DE H`. This indicates that the controller is in parameter mode.
5.2.1 Creating parameter addresses and values
In parameter operation the most significant bit (msb) in Word 1 is defined as a read or write bit (R/W),
where 1 = write and 0 = read, this should be accompanied by the corresponding parameter address.
The mode bit (msb in Word 3) is used to select normal or parameter operation, 0 = Normal or 1 = pa-
rameter operation.
Word 1:
reserved
0000
H
Word 2
:
R / W
–
Bit + Address
e.g. 8000 H + 1009 H => 9009 H
Word 3
:
Value of the parameters
e.g. 7FFF H
Word 4
:
Mode bit = 1 + Control bit’s
e.g. 8000 H + 0004 H => 9004 H
5.2.2 Send Write Enable
H-Byte L-Byte
Wor
d
1
0000 H (reserved)
15
14 13 12
11 10 9 8 7 6 5 4 3 2 1 0
H-Byte L-Byte
Word
2
Write Enable Address = C0DE H
C0
DE
H-Byte L-Byte
Word
3
Write Enable = B5E7 H
B5 E7
H-Byte L-Byte
Word
4
Control - Word + 8000 H
Mode Bit must be set to `1` !!
All unused bits must be set to `0`
Bit = `1` = Function ON
15
14 13 12
11 10 9 8 7 6 5 4 3 2 1 0
1 Mode bit 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Control Information unit specific