Reading The Registers - HP E1343A User Manual

Reading the
Registers
ID and Device Type
Registers
ID
FF00
FF01
FF02
FF03
FF04
FF06
Status Control Register
Tree Switch and Channel
Registers
Appendix B
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You can read the following multiplexer registers:
-- ID Register (base +00
-- Device Type Register (base +02
-- Status Control Register (base +04
-- Tree Switch Registers (base +06
-- Channel Registers (base +08
ID Registers: Reading this register returns FFFF
Hewlett-Packard as the manufacturer and that the module is an
A16 register based device.
Device Type Register: Reading this register returns:
Model
E1345A 16-Channel 3 Wire Relay Multiplexer
E1343A 16-Channel 3 Wire High Voltage Relay Multiplexer
E1347A 16-Channel Thermocouple Relay Multiplexer
E1344A 16-Channel Thermocouple High Voltage Relay Multiplexer
E1355A 8-Channel 120 Ohm Strain Relay Multiplexer
E1356A 8-Channel 350 Ohm Strain Relay Multiplexer
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
"not busy": FFFF
Always returns FFFF
)
16
)
16
)
16
)
16
)
16
Description
16
16
regardless of channel/tree switch state.
16
16-Channel Relay Multiplexer Registers
. This shows
16
81