Channel Mode Register; Channel Relay Control Register - HP E1418A User Manual

Channel Mode
Register
Bit
Address
READ
Base + 1A
16
WRITE
Mode
Channel Relay
Control Register
Bit 15
Address
READ Ch
Base + 1C
16
16
WRITE
Relay
Appendix B
The Channel Mode Register reports or programs the voltage or current
operating mode for each channel.
15 14 13 12 11
Ch Ch Ch Ch Ch
16 15 14 13 12
Mode Mode Mode Mode
Ch XX Mode: Writing a one (1) to this field selects the voltage output
mode for that channel. Writing a zero (0) to this field selects the current
output mode for that channel.
The mode program jumpers on the terminal module override values written
to this register. When the P/J jumper for a channel is set to jumper
selectable, writing to this register has no effect.
Reading this register returns the channel mode. The channel mode is
reported in this register for both VXIbus backplane programming and
jumper programming on the terminal module.
Note
Channels 09 through 16 will return ones (1) if the module is configured as
an 8-channel device.
The Channel Relay Control Register programs and reports the state of each
channel relay.
14 13 12 11
Ch Ch Ch Ch
15 14 13 12
Relay Relay Relay Relay
Ch XX Relay: Writing a one (1) to this field opens the channel relay.
Writing a zero (0) to this field closes the channel relay. The write operation
will complete before the relays change state. The relays take approximately
5 milliseconds to change state.
Reading this register returns a one (1) in each field if the channel relay is
programmed open and a zero (0) if the channel relay is programmed closed.
Note
Channels 09 through 16 will return ones (1) if the module is configured as
an 8-channel device.
10 09 08 07
Ch Ch Ch Ch
11 10 09 08
Mode Mode Mode Mode Mode
10 09 08 07 06
Ch Ch Ch Ch Ch
11 10 09 08 07
Relay Relay Relay Relay Relay
HP E1418A Register-Based Programming
06 05 04 03 02
Ch Ch Ch Ch Ch
07 06 05 04 03
Mode Mode Mode Mode
05 04 03 02
Ch Ch Ch Ch
06 05 04 03
Relay Relay Relay Relay
01 00
Ch Ch
02 01
Mode Mode
01 00
Ch Ch
02 01
Relay Relay
140