User`s manual

16-Channel Relay Multiplexer Registers 83Appendix B
Register Definitions The 16-Channel Relay Multiplexer Modules are register-based devices. See
Figure B-3 for register definitions.
ID Register
* Returns FFFF
16
=Hewlett-Packard A16 only register-based
Device Type Register
* Returns: FF00
16
=16-Channel Relay Multiplexer (E1345A)
FF01
16
=16-Channel High Voltage Relay Multiplexer (E1343A)
FF02
16
=16-Channel Thermocouple Relay Multiplexer (E1347A)
FF03
16
=16-Channel Thermocouple High Voltage Relay Multiplexer (E1344A)
Status/Control Register
* R =Multiplexer reset to power-on state (all switches open)
** B =Status "busy" is true low in bit #7 (FF7F
16
)
Tree Switch Register
* Write "1" closes switch, write "0" opens switch
Channel Registers
* Write "1" closes channel, write "0" opens channel
Figure B-3. Multiplexer Register Definitions
Base +00
16
1514131211109876543210
Write Undefined (Logical Address)
Read* Reg-Base A16 Manufacturer ID
Base +02
16
1514131211109876543210
Write Undefined
Read* 1 (A16 only) Module ID Code
Base +04
16
1514131211109876543210
Write* Undefined R
Read** B
Base +06
16
1514131211109876543210
Write* Undefined 93929190
Read Always returns FFFF
16
Base +08
16
1514131211109876543210
Write* CH15 CH14 CH13 CH12 CH11 CH10 CH09 CH08 CH07 CH06 CH05 CH04 CH03 CH02 CH01 CH00
Read Always returns FFFF
16