User`s manual

DeviceNet (Master) Function
8-26
8
(3) Allocation in the order in which vacant nodes are occupied
Assign the data length (number of bytes of data) in the input/output data table in the order that the
node addresses were assigned to each slave station.
1. Assign the required data length to slave stations using the I/O message function.
2. The JW-32CUM1 does not allocate any data length for slave stations that do not have a I/O
message function.
3. The JW-32CUM1 will allocate the default data length to any slave station number (node address)
that does not actually have hardware connected.
Enter the switches SW7-5, SW7-6, and system memory of the JW-32CUM1. -See page 8-9.
Allocation example
The results of "allocation in the order in which vacant nodes are occupied, "for the example
shown on page 8-22, are as follows.
- The default data length was set to 2 bytes.
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)
to
128th byte (ｺ2177)
129thbyte (ｺ2200)
130thbyte (ｺ2201)
to
512th byte (ｺ2777)
Node address 1
(slave)
Input
Output
Node address 2
(not connected )
Not
used
Node address 3
Input
(slave)
Output
Node address 5
(slave)
Input
Node address 6
(not connected )
Not used
Node address 63
(not connected )
Not used
Not used
* Addresses in parentheses are correct when
the data table allocation system is set to
"fixed allocation."
Node
address
Required data
length (bytes)
I/O message
function
Assigned data
length (bytes)
12(1 input, 1 output) Yes 2 (1 input, 1 output)
2 Not connected - 2
36(3 input, 3 output) Yes 6 (3 input, 3 output)
40 No0
53(3 input, 0 output) Yes 3 (3 input)
(When the default data length is set to 2 bytes)
- The default data length is assigned to slave stations 1, 3, and 5.
- Slave station 2 (no hardware connected) is assigned the default data length (2 bytes).
- Slave station 4 (without a I/O message function) is not allocated any data length.
Input/output data table
to