Mitsubishi Electric Q12DCCPU-V User Manual page 199

5
ACCESS VIA NETWORK MODULES
(2) Direct access
(a) What is direct access?
(b) Directly accessible devices
The direct access is a method of directly accessing a link device of a CC-Link IE
controller network module from a user program on the C Controller module,
independently of the link device refresh.
Since direct access does not use any internal link device buffer, the link device
refresh cycle and refresh parameters need not be set in CC IE Control utility.
The following devices are directly accessible.
Table 5.10 Directly accessible device list
Access method
Direct access
C Controller module
User program
/* Data write */
ret = QBF_WriteLinkDevice();
or
ret = mdSend();
ret = mdRandW();
ret = mdDevSet();
ret = mdDevRst();
/* Data read */
ret = QBF_ReadLinkDevice();
or
ret = mdReceive();
ret = mdRandR();
5.4 CC-Link IE Controller Network Module Access Function
Accessible device
LX
LY
LB
LW
SB
SW
CC-Link IE controller network module (First module)
Link devices
Direct access
LX
LY
CC-Link IE controller network module
(Second module)
CC-Link IE controller network module
(Third module)
Figure 5.43 Direct access
5.4.2 Link device access
LB
LW
SB
SW
CC-Link IE controller network module
(Fourth module)
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