Issue
The station’s database indicates a “successful” start, however, the error message “Service Unavailable – Service disabled in remote station” is seen when attempting to tunnel with XPSI. See I/A Series Enhanced ASD Driver - Release Notes for more information on this issue.
Environment
I/A Series (Niagara) R2 station, with VSerial service and ibsAsd service installed.
XPSI 4.1 or newer.
Cause
The vserial and IbsAsd services use common tunnel software components, and having both services enabled at the same time causes conflicts in registering the services.
Resolution
The resolution to this issue requires that the I/A Series (Niagara) R2 station be running the ibsAsd 2.302.516b.v1 jar file, or later.
- In a station where communications with ASD controllers, and the ability to tunnel into the ASD bus with XPSI are both required, delete the vserial service and reboot the UNC.
- In stations where both the ibsAsd service and the vserial service are required (not simultaneously), see the TAC I/A Series Enhanced ASD Driver Engineering Guide, F-27429-3, Appendix B, “Tunneling Example”, pp 123 – 130 for an application that will allow only one or the other service to run at a time, and prevent the conflict between them. This document and the I/A Series Enhanced ASD Driver - Release Notes are included with the I/A Series (Niagara) R2 software release R2.301.522 and newer documentation.