VXI SM8000 - Manual (Page 51)

VXI Technology, Inc.
SM8000 Series Programming 51
Status Register – Read Only
ADDR Plug-In LA+0x104
D15-D13
Hardware Revision
Code
D12-D8 Unused
D7-D4
Optical Module
Access Fail Bits
0 = Indicates that optical module 3 thru 0, respectively, have not
detected a communications error. This is the normal quiescent
state.
1 = Indicates that the optical module indicated has detected a
communications error, and may or may not have processed the last
command sent to it. May be used to identify a module that has
become unresponsive.
Pon state = 0
A read of this bit location will indicate whether the optical module
indicated has detected a communications error. These bits are
normally not used by the operator. Their usefulness is only in
trouble shooting possible module problems.
D3-D0
Optical Module
Error Bits
0 = Indicates that optical module 3 thru 0, respectively, are
operating normally. This is the normal quiescent state.
1 = Indicates that the optical module has set its Error Output to
indicate an error condition. This signal is used to identify a module
that is operating in error.
Pon state = 0
Possible reasons for this bit being set by the optical module in
question are:
1) Requested channel on a multi switch module is out of range,
user error.
2) Stepper motor error has occurred, device malfunction.
3) Proximity sensor switch error has occurred, device
malfunction.
4) Requested attenuation is out of range, user error.
The module Error Bits should be polled by the user to determine
proper module operation.