Appendix BSpecifications
199
Set the transmission delay to match that of the B7A Link Terminal. A transmission error will occur if the same trans-
mission delay is not set.
The “3ms” indicator will be lit whenever the high-speed (3 ms) transmission delay is set.
Transmission Error Process
Pin 2 is used to turned ON to specify resetting input status when transmission errors occur. If pin 2 is turned OFF,
input status will be held when transmission errors occur.
The LOAD OFF indicator will be lit whenever pin 2 is turned ON.
Input Mode
Pin 3 is turned ON to specify use of only 15 inputs and the use of bit 15 as a Transmission Error Flag. If pin 3 is OFF,
16 normal inputs can be used.
The “15IN+ERR” indicator will be lit whenever pin 3 is turned ON.
ERROR Indicators
Pin 4 or pins 4 and 5 are turned ON to enable the ERROR, ERROR 1, and/or ERROR 2 indicators. These indica-
tors will not light even if a transmission error occurs if the corresponding pin is turned OFF.
Transmission Error Precautions
Startup
The Transmission Error Flag for the B7A Interface Unit will be OFF when power is turned on to the
C200HX/C200HG/C200HE. If normal transmissions with the B7A Link Terminal are not possible within about 10
ms, the Transmission Error Flag (bit 15) will turn ON (i.e., if its operation is enabled by the input mode setting).
All input bits will remain OFF until normal transmissions are achieved.
Inputs
When a transmission error occurs, input status will be either held or all inputs will be reset according to the setting
for the transmission error process, and the Transmission Error Flag (bit 15) will turn ON (i.e., if its operation is
enabled by the input mode setting). The Transmission Error Flag will go OFF and the input status will return to
normal when normal transmissions are achieved again.
Outputs
Transmission errors for Output B7A Link Terminals are not detected at the B7A Interface Unit and must be con-
firmed using the error indicators or error outputs on the Link Terminal.
To Next Page
Loading...
Need help?
General
