Master Function Parameter Setting Area - Mitsubishi Electric QJ71DN91 User Manual

3 SPECIFICATIONS

3.4.5 Master function parameter setting area

Buffer memory
address (Hex.)
01D4 to
H
Use prohibited
01D6
H
01D7 Constant scan
H
01D8
H
01D9
H
1st slave
node
01DA
H
01DB
H
01DC
H
01DD
H
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Parameters for master function are set in this area.
To exchange I/O data with each slave node (up to 63 nodes), information such as
connection types and I/O points is set.
(1) Parameters for Master Function (address: 01D4
975)
Master function parameters are set in this area.
For use of auto configuration, refer to Section 7.3 (2).
For saving parameters to a flash ROM, refer to Section 7.3 (3).
Table 3.24 Master function parameters
Item
Node No. and message
group
Connection type
Number of byte modules
Number of word modules
Number of double-word
modules
Expected packet rate
Specified to keep link scan time constant.
(Setting range: 0 to 65535ms (FFFF
Low byte: Node No. (MAC ID) of the 1st slave node
00 to 3F (0 to 63)
H H
High byte: 01 Node that supports UCMM and uses any of message groups
H
3, 2, and 1.
03 Node that supports UCMM and uses message group 1
H
04 Node that does not support UCMM (Group 2 only server)
H
80 Reserved node
H
Select a connection type for I/O communication.
0001 = Polling
H
0002 = Bit strobe
H
0004 = Change of state
H
0008 = Cyclic
H
Low byte: Number of input byte modules
High byte: Number of output byte modules (set in hexadecimal)
Eight bit modules (8 points) are counted as one byte module.
Low byte: Number of input word modules
High byte: Number of output word modules (set in hexadecimal)
Low byte: Number of input double-word modules
High byte: Number of output double-word modules (set in hexadecimal)
Set an expected packet rate for the slave node.
Setting varies depending on the connection type. For details, refer to Table
3.25. (Setting range: 0 to 65535ms (FFFF
0000 : 200ms (Default)
H
Other than 0000 : Set value – 1 (ms)
H
MELSEC-Q
to 03CF
H
Description
—
)) *1
H
)) *1
H
/468 to
H
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