OSS to GIC

Communications between the Optical Support Subsystem (OSS) LIC and the GIC consists of one tag, an array of 128 BOOL values for various logic values (see below).

OSS to GIC bit assignments

OSS_to_GIC is a user-defined type SAFETY_ARRAY which consists of the the safety connection status and an array of 128 BOOL. Assignments are listed below:

Tag Name	Data Type	Description
OSS_to_GIC	UDT_SafetyArray
OSS_to_GIC.Connection_Status	CONNECTION_STATUS
OSS_to_GIC.Data[0]	BOOL	Telescope Mount Emergency Stop OK
OSS_to_GIC.Data[1]	BOOL	Telescope Mount PLC I/O OK (LEDstatus=3)
OSS_to_GIC.Data[2]	BOOL	reserved
OSS_to_GIC.Data[3]	BOOL	reserved
OSS_to_GIC.Data[4]	BOOL	reserved
OSS_to_GIC.Data[5]	BOOL	reserved
OSS_to_GIC.Data[6]	BOOL	reserved
OSS_to_GIC.Data[7]	BOOL	reserved
OSS_to_GIC.Data[8]	BOOL	OSS on sun
OSS_to_GIC.Data[9]	BOOL	reserved
OSS_to_GIC.Data[10]	BOOL	reserved
OSS_to_GIC.Data[11]	BOOL	reserved
OSS_to_GIC.Data[12]	BOOL	reserved
OSS_to_GIC.Data[13]	BOOL	reserved
OSS_to_GIC.Data[14]	BOOL	reserved
OSS_to_GIC.Data[15]	BOOL	reserved
OSS_to_GIC.Data[16]	BOOL	Heat Stop Safety Shutter Open
OSS_to_GIC.Data[17]	BOOL	Heat Stop Safety Shutter Closed
OSS_to_GIC.Data[18]	BOOL	Heat Stop Safety Shutter Permissive
OSS_to_GIC.Data[19]	BOOL	Heat Stop Safety Temperature OK
OSS_to_GIC.Data[20]	BOOL	Heat Stop Safety Pressure OK
OSS_to_GIC.Data[21]	BOOL	reserved
OSS_to_GIC.Data[22]	BOOL	reserved
OSS_to_GIC.Data[23]	BOOL	reserved
OSS_to_GIC.Data[24]	BOOL	Heat Stop Installed
OSS_to_GIC.Data[25]	BOOL	M2 Installed
OSS_to_GIC.Data[26]	BOOL	reserved
OSS_to_GIC.Data[27]	BOOL	reserved
OSS_to_GIC.Data[28]	BOOL	reserved
OSS_to_GIC.Data[29]	BOOL	reserved
OSS_to_GIC.Data[30]	BOOL	reserved
OSS_to_GIC.Data[31]	BOOL	reserved
OSS_to_GIC.Data[32]	BOOL	M5 Temperature OK
OSS_to_GIC.Data[33]	BOOL	Heat Stop Fuse Wire OK
OSS_to_GIC.Data[34]	BOOL	GOS small FOV selected
OSS_to_GIC.Data[35]	BOOL	reserved
OSS_to_GIC.Data[36]	BOOL	reserved
OSS_to_GIC.Data[37]	BOOL	reserved
OSS_to_GIC.Data[38]	BOOL	reserved
OSS_to_GIC.Data[39]	BOOL	reserved
OSS_to_GIC.Data[40]	BOOL	reserved
OSS_to_GIC.Data[41]	BOOL	reserved
OSS_to_GIC.Data[42]	BOOL	reserved
OSS_to_GIC.Data[43]	BOOL	reserved
OSS_to_GIC.Data[44]	BOOL	reserved
OSS_to_GIC.Data[45]-->[127]	BOOL	not used