User`s manual

DeviceNet (Master) Function
8-24
8
(2) Even number allocation
Assign the number of bytes of data in the input/output data table (data length) in the order that the
node addresses were assigned to each slave station.
1. Set the predetermined data length for slave stations to an even number of bytes.
If an individual slave station needs more than the default amount of data, the JW-32CUM1 can
be used to assign a different data length in terms of multiples of the default data length.
2. The JW-32CUM1 assigns the default data length to slave stations that do not have a I/O
message function.
3. The JW-32CUM1 also assigns the default data length to slave station numbers (node
addresses) that do not have any hardware connected to them.
Enter the data length between 1 and 3 on the system memory of the JW-32CUM1. -See page 8-9.
Allocation example
Allocation results of page 8-22 (top part) are as follows.
Data lengths below are true when 2 bytes is specified.
Address *
1st byte (ｺ2000)
2nd byte (ｺ2001)
3rd byte (ｺ2002)
4th byte (ｺ2003)
5th byte (ｺ2004)
6th byte (ｺ2005)
7th byte (ｺ2006)
8th byte (ｺ2007)
9th byte (ｺ2010)
10th byte (ｺ2011)
11th byte (ｺ2012)
12th byte (ｺ2013)
13th byte (ｺ2014)
14th byte (ｺ2015)
15th byte (ｺ2016)
16th byte (ｺ2017)
Input/output data table
17th byte (ｺ2020)
18th byte (ｺ2021)
to
131st byte (ｺ2202)
132nd byte (ｺ2203)
133rd byte (ｺ2204)
to
512th byte (ｺ2777)
1sserddaedoN
)noitatsevals(
tupnI
tuptuO
2sserddaedoN
)detcennocton(
desutoN
3sserddaedoN
)noitatsevals(
tupnI
tuptuO
4sserddaedoN
)noitatsevals(
desutoN
5sserddaedoN
)noitatsevals(
tupnI
desutoN
6sserddaedoN
)detcennocton(
desutoN
36sserddaedoN
)detcennocton(
desutoN
desutoN
~
* Addresses in parentheses are correct when
the data table allocation system is set to "fixed
allocation."
sserddaedoN
atadderiuqeR
)setyb(htgnel
egassemO/I
noitcnuf
htgnelataddengissA
)setyb(
1)tuptuo1,tupni1(2seY)tuptuo1,tupni1(2
2detcennoctoN-2
3)tuptuo3,tupni3(6seY)tuptuo3,tupni3(6
40 oN2
5)tuptuo0,tupni3(3seY)desuton1,tupni3(4
- The needed data length (2 bytes) is assigned to slave station 1.
- Slave station 2 (not connected) and slave station 4 (does not have a I/O message function) are
assigned the default data length (2 bytes).
- Slave stations 3 and 5 need a larger number of bytes than the default data length. (2 bytes).
Therefore, in these cases, a different data length is assigned which is a multiple of the default data
length (2 bytes).
- Slave station 3 needs 6 bytes and is assigned 6 bytes (2 x 3).
- Slave station 5 needs 3 bytes and is assigned 4 bytes (2 x 2).