The CAMAC 082 Module provides monitor and control functions for the Helium Tank Farm Facility. The module is located at CHL and is interfaced to a separate manual control and monitor chassis. The manual chassis at CHL connects to the actual control hardware at A3 service building via a separate serial link.
The Tank Farm consists of thirteen tanks (#1-#13) and five devices per tank (#1-#5). The devices consists of three valve positions , a temperature monitor, and a pressure monitor. Each of the tree valves can be remotely operated.
All associated monitor data at A3 is scanned and serially transmitted to CHL. Each transmission contains data for a particular tank and device. Tank number, device number, and associated data are made available to the 082 Module at CHL in parallel format for storage in on-board RAM. A complete refresh of the data occurs approximately every 25 ms. The tank and device number forms the address of the local RAM. 128 RAM locations are refreshed (tank 0-15, device 0-7) even though only 65 locations are meaningful.
Codes return Q and X immediately unless otherwise noted.
The Tank/Device number is as specified by the F(18) A(0) operation. This separate register is updated from local RAM upon receipt of the F(18) A(0) command. It is also updated upon receipt of data for the Tank/Device number of choice when presented by the normal scan.
| ||to/from (clean)valve||dirty manifold valve||scrubber valve|
|15L||XMIT DATA|| ||15R|