User`s manual

16-Channel Relay Multiplexer Registers 81Appendix B
Reading the
Registers
You can read the following multiplexer registers:
-- ID Register (base +00
16
)
-- Device Type Register (base +02
16
)
-- Status Control Register (base +04
16
)
-- Tree Switch Registers (base +06
16
)
-- Channel Registers (base +08
16
)
ID and Device Type
Registers
ID Registers: Reading this register returns FFFF
16
. This shows
Agilent Technologies as the manufacturer and that the module is an
A16 register based device.
Device Type Register: Reading this register returns:
Status Control Register Each channel requires about 1 msec to close or open (2 msec for a close/open
cycle). During this time, and also during a reset, the multiplexer is "busy".
The Status Register returns the following:
"busy": FFF7
16
"not busy": FFFF
16
Tree Switch and Channel
Registers
Always returns FFFF
16
regardless of channel/tree switch state.
ID Model Description
FF00 E1345A 16-Channel 3 Wire Relay Multiplexer
FF01 E1343A 16-Channel 3 Wire High Voltage Relay Multiplexer
FF02 E1347A 16-Channel Thermocouple Relay Multiplexer
FF03 E1344A 16-Channel Thermocouple High Voltage Relay Multiplexer
FF04 E1355A 8-Channel 120 Ohm Strain Relay Multiplexer
FF06 E1356A 8-Channel 350 Ohm Strain Relay Multiplexer