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MELSEC-Q
3 SPECIFICATIONS
(5) Refresh time with the remote I/O module, I/O module and intelligent
function module
Refresh time with the remote I/O module, I/O module and intelligent function
module is according to the formula shown below.
[I/O module and refresh time]
TRIOR = XK/16 0.0016 + XZ/16 0.0024 + YK/16 0.0014 + YZ/16 0.0022 [ms]
T
RIOR : I/O refresh time
X
K : Number of input modules mounted to main base unit (Multiples of 16)
X
Z : Number of input modules mounted to extension base unit (Multiples of 16)
Y
K : Number of output modules mounted to main base unit (Multiples of 16)
Y
Z : Number of output modules mounted to extension base unit (Multiples of 16)
The number of I/O modules ranges as follows:
The input module is the X range set by the common parameters of the network
parameters
The output module is the range of modules mounted to the remote I/O station
(from the first output module mounted to the main base unit to the last output
module mounted to the extension base unit.)
In the formula, the main base unit and extension base units from the range
referenced above are assigned.
[Intelligent function module and refresh time]
TRBF = NBF + NCF NDT + NEX [ms]
T
RBF : Refresh time between intelligent function module and GX Configurator
N
BF : Refresh time generated by auto refresh settings of GX Configurator for intelligent function module
N
BF = (number of set modules 0.05ms) + (number of set items 0.22ms)
+ (number of set words
0.005ms) [ms]
N
CF : Refresh time generated by CC-Link auto refresh settings of remote I/O station
N
CF = (number of set modules 3ms) + (number of set words 0.003ms) + 1ms [ms]
N
DT : Refresh time generated by device-to-device transfer parameter settings of remote I/O station
N
DF = (number of set devices 0.3ms) + (number of set words 0.006ms) [ms]
N
EX : Delay time by external access or relay processing
1
N
EX = 0 ms or 20 ms
1: In the case of the following access (reading and writing devices, monitoring,
etc.) or relay processing, 20 ms is generated as delay time.
Without any access or relay processing, the delay time is 0 ms.
• When accessing a remote I/O station from GX Developer or GOT, or when
accessing other station from GX Developer or GOT via a remote I/O
station.
• When accessing a remote I/O station from an intelligent function module,
or when accessing other station from an intelligent function module via a
remote I/O station.
• When accessing a remote I/O station from a CPU module.