P
We have three PC's :
PC1 communicates to 2 Siemens S5 PLC's via H1 I/O server (SuiteLink) and 2 Flow Computers via bespoke I/O server written with I/O server Toolkit (NETDDE)
PC2 communicates to 2 Siemens S5 PLC's via H1 I/O server (SuiteLink) and 1 Flow Computers via bespoke I/O server written with I/O server Toolkit (NETDDE)
PC3 communicates to 1 Siemens S5 PLC via H1 I/O server (SuiteLink) and 1 Flow Computer via bespoke I/O server written with I/O server Toolkit (NETDDE)
Each PC transfers data with the others using SuiteLink. Each PC can execute the functionality for all PLC/Flow Computer combinations.
Each PC retrieves data from a remote 'Host' machine running SQL server 2000 and runs an Active X control to validate data.
The system operates fine when first started but after approx. 2 days the machines have slowed significantly. The handshakes between the InTouch applications/PLC's give sporadic alarms(10second time-out) which gradually get worse.
Eventually a machine (or sometimes all three machines) completely lock-up requiring a re-boot to rectify the problem.
Has anyone any ideas? (or preferably a cure)??
Best Regards,
Phil Irvine
Control Systems Engineer.
PC1 communicates to 2 Siemens S5 PLC's via H1 I/O server (SuiteLink) and 2 Flow Computers via bespoke I/O server written with I/O server Toolkit (NETDDE)
PC2 communicates to 2 Siemens S5 PLC's via H1 I/O server (SuiteLink) and 1 Flow Computers via bespoke I/O server written with I/O server Toolkit (NETDDE)
PC3 communicates to 1 Siemens S5 PLC via H1 I/O server (SuiteLink) and 1 Flow Computer via bespoke I/O server written with I/O server Toolkit (NETDDE)
Each PC transfers data with the others using SuiteLink. Each PC can execute the functionality for all PLC/Flow Computer combinations.
Each PC retrieves data from a remote 'Host' machine running SQL server 2000 and runs an Active X control to validate data.
The system operates fine when first started but after approx. 2 days the machines have slowed significantly. The handshakes between the InTouch applications/PLC's give sporadic alarms(10second time-out) which gradually get worse.
Eventually a machine (or sometimes all three machines) completely lock-up requiring a re-boot to rectify the problem.
Has anyone any ideas? (or preferably a cure)??
Best Regards,
Phil Irvine
Control Systems Engineer.