Omron DeviceNet 3G8F7-DRM21-E, Руководство по эксплуатации

Страница: 107 / 149

90
Maintenance API Functions
Section 4-7
The status obtained using this function is not required for control, but is useful
for determining whether or not a communications error originated in the net-
work.
Reading Scanner Status: SCAN_GetScannerStatus()
Application Range Open status
Function Gets the scanner status.
Call Format BOOL SCAN_GetScannerStatus(DWORD Handle , DWORD * Status )
Arguments
Return Value TRUE is returned if the specified Board’s scanner status was read success-
fully. FALSE is returned if an error occurred. Detailed error information can be
read with the GetLastError() function.
Description The following table shows the location and meaning of the scanner status
flags. The flags are contained within 32 bits.
Monitor scanner status bit 0 to check if errors have occurred when using Mas-
ter or Slave functions to perform I/O communications.
Bits 0 to 13 notify if errors have occurred. Bit 0 is an OR of bits 1 to 13.
Bit 1 turns ON if an error occurs with the Master function. Bit 1 is an OR of bits
0 and 2 of the Master function status obtained using SCAN_Get
MasterModeStatus().
Bit 3 turns ON if an error occurs with the Slave function. Bit 3 is an OR of bits
2 and 3 of the Slave function status obtained using SCAN_Get
SlaveModeStatus().
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
DWORD * Status Buffer address for receiving the status.
Bit Code Meaning
0 B00 Scanner function error occurred
1 B01 Master function error occurred
2 --- Not used
3 B03 Slave function error occurred
4 B04 Memory error
5 B05 Bus off error
6 B06 MAC ID duplication error
7 B07 Network power supply error
8 B08 Transmission timeout error
9 to 12 --- Not used
13 B13 Invalid message monitoring timer
14 and 15 --- Not used
16 B16 Online
17 B17 Scanning (I/O communications being executed)
18 to 20 --- Not used
21 B21 Slave function enabled mode
22 B22 Automatic setting of Slave scan type
23 to 30 --- Not used
31 B31 Error log in use