LSIS XGL-C22A, Руководство пользователя, Страница: 196 / 299

Chapter 9 User-defined Communication
9-15
(2) RCV_UDATA
RCV_UDATA Availability Flags
User defined data send XGI, XGR -
Function Block Description
Input REQ: requires to execute the function block
BASE : base number
SLOT: slot number
CH: channel(1 or 2)
DATA: data area to save
Output DONE: maintains 1 after operation
STAT: completion and ERR info
SIZE: received data size
(a) Function
1) RCV_UDATA instruction saves received user defined data(UDATA) from CNET module.
2) BASE and SLOT should input a base and the slot number that CNET module was attached to now.
3) CH means a channel number and must set 1 or 2
4) DATA must be declared only ARRAY OF BYTE type.
5) Array size is 1 ~ 1024 byte.
6) Save to transmit buffer as number as SIZE from DATA[0]. (Limit of data size is 1024 at once)
7) If 1 is output by Done and STAT, it accomplished normally and If an error is produced, state information
is displayed by STAT
(b) Error
STAT Message Description
0 Initial state Initial state before instruction operation
1 No error normal operation
2 Module setting error Module is not installed or CNET module trouble
3 Channel setting error Input range(1, 2) is exceeded
4 Array size error Transmit data size exceed 1024
5 Parameter setting error CNET module’s parameter is not set as User defined or link enable is not
set
6 Instruction timeout error No response from module or maximum scan time is exceeded(10 scan)
7 Version mismatch error
XGI CPU version is under V3.9, XGR CPU version is under V2.6 or
CNET module version is under V3.2