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116 L4400 User’s Guide
5 L4433A Dual/Quad 4x8 Reed Matrix
Example: Querying channels for open or close state The following command
returns a 1 (true) or 0 (false) state of channel 204.
ROUTe:CLOSe (@1204)
ROUTe:CLOSe? (@1204) !Returns a 1
ROUTe:OPEN? (@1204) !Returns a 0
Example: Querying the system for module Identify The following command
returns the identity of the L4433A:
SYSTem:CTYPe? 1
Reading Cycle Count and Resetting the Power-On State
Example: Reading the cycle count for a relay The following command returns
the cycle count on channels 304 and 308.
DIAGnostic:RELay:CYCLes? (@1304,1308)
Example: Resetting the power-on state The following command sets the
L4433A to its power- on state.
SYSTem:CPON 1
Linking Multiple L4433A Instruments
You can link multiple L4433A instruments to form a larger matrix. The
following two drawings show two- module connections through rows and
columns.
You can connect rows in separate instruments using external wiring. Or,
using Bank 2 matrices, you can connect through the analog busses. For a
clear idea of how matrices are arranged and their connections to the analog
busses, see the simplified schematics later in this chapter. You must use
external wiring whenever you connect:
• rows in Matrix 1 of separate modules
• rows in Matrix 1 to rows in Matrix 2 on the same or separate modules
• columns of two matrices on the same or separate modules
NOTE
For the L4433A, the query response may include a suffix to indicate
a 1-wire configuration. For example, the response for the L4433A
will be either "L4433A" (2-wire mode) or "L4433A-1W" (1-wire
mode).