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SHEETDESCRIPTIONDESIGN DATE EDIT
01 Mutai Newl
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istered
TITLE: PROFIBUS-DP Board OPERATOR’S MANUAL
For FS 30i/300i, 31i/310i, 32i/320i–MODEL A
Note about the number of available I/O module Units
B-63994EN/02-1
FANUC LTD.
04.10.14
DRAW.NO.
1.5 About the number of available I/O moduel units
The maximum number of I/O module units per slave station is determined by Slave
parameter length which can be calculated with the following expression.
Slave parameter length = 26 + [ 9 + USER PRM DATA length] (note)
+ [ 2 + CONFIG DATA length] (note)
+ SLAVE USER DATA length
=< 240 bytes
(note) If the value of […] is an odd number, make it an even number by
adding one to an original value.
The length of each parameter (USER PRM DATA, CONFIG DATA, SLAVE USER
DATA) can be got from PROFIBUS Salve parameter screen of CNC.
Example
Case 1: USER PRM DATA length =157, CONFIG DATA length=46,
SLAVE USER DATA length=0
26 + [ 9 + 157 ] + [ 2 + 46 ] + 0 = 240 (Available)
Case 2: USER PRM DATA length =158, CONFIG DATA length=47,
SLAVE USER DATA length=0
26 + [ 9 + 158 (+1) ] + [ 2 + 47 (+1)] + 0 = 244 (Not available)