Yaskawa JAPMC-MC2303-E - Manual (Page 58)

4
FL-net T
ransmission
Definition
4.2 FL-net Transmission Definition
4.2.1 Transmission Parameters Tab Page
4-5
Common memory area 1 size
Make this setting to assign registers to respective areas 1 and 2 in the entire common memory within an I/O
register range assigned in the Module Configuration Window. The 1 size of common memory area beginning
with an I/O leading register number is assigned for area 1, and the remaining range (from [I/O leading register
number + 1 size of common memory area] to I/O ending register number) is assigned for area 2.
Set the size in units of words within a range from 0 to 200H (0 to 512 words).
ΠThe maximum value of the area 1 size is 200H and that of the area 2 size is 2000H.
ΠThe default value is 200(H). When reducing this value, reduce the I/O register range in advance on the Module
Configuration Window by the value to be reduced (or by the value greater than the value to be
reduced).When an attempt is made to reduce a common memory area 1 range without this operation, an error
will occur.
<Example>
To set common memory area 1 size to 100(H) when an I/O leading register number is 0402 and an I/O ending
register number is 2601, the I/O register number must be reduced to 2501 or less or the I/O leading register
number must be set to 0302 or more.
When the default value is changed, an error occurs for the following reasons.
Because the common memory area 1 size is 200H and the I/O register size is 2200H by default, the default
common memory area 2 size (I/O register size - common memory area 1 size) is 2000H (maximum value of
common memory area 2 size). When the common memory area 1 size is less than the default value of 200, an
error will occur because the common memory area 2 size exceeds the maximum value of 2000H.
ΠFor common memory and areas 1 and 2, refer to 5.3.1 ( 4 ) Common Memory and Areas 1 and 2 on page 5-9
and 5.3.1 ( 5 ) Assignment of I/O Register and Common Memory on page 5-10.
ΠFor relationship between common memory assigned to the I/O register and common memory assigned to each
node, refer to 4.2.2 ( 3 ) Link Assignment Setting Example and Common Memory Assignment Image on page
4-8.
Node name
Enter a name of the local node up to ten characters.
„ Terminology: Minimum Permissible Frame Interval
FL-net shares this minimum permissible frame interval in the network. Each node calculates and updates the maximum value of
minimum permissible frame intervals set by nodes joined to the network each time a node joins or leaves the network.
5
6