User manual

Getting Started 33Chapter 1
or any combination of the above.
Low or High Terminal Number
The LO or HI terminal number is specified for one-wire mode only and
identifies what terminal will be used during one-wire switching. This number
can be omitted when the low terminal is the desired selection. Only valid
terminals can be accessed in a channel list. 00 is specified to use the LO (L)
terminal of the bank and channel selected. Defaults to LO terminal if not
entered. 01 is specified to use the HI (H) terminal of the bank and channel
selected.
Bank Number
The bank number identifies what bank of eight channels will be affected
during switching. The bank numbers are 0 to 7 for one-wire and two-wire
modes and 0 to 3 for three-wire and four-wire modes. Only valid banks can
be accessed in a channel list. Closing, opening, or querying banks 4 to 7

when operating in three-wire and four-wire modes will generate an error.
Channel Number
The channel number identifies what channel will be switched to its COM
terminal. Channel numbers are 0 to 7. Only valid channels can be accessed
in a channel list. When switching the control relays, the channel number

(0 to 6) identifies which control relay will be switched (see Figure 1-1).
Examples: Multiplexer
Module Channel List
One-wire operating mode:
CLOSe (@10173)
!Connect card 01, bank 7, channel 3 HI
terminal to the one-wire HI COM terminal
Two-wire operating mode:
CLOSe (@173,176)
!Connect card 01, bank 7, channels 3 and
6 HI and LO terminals, to bank 7 HI and LO
COM terminals
Three-wire operating mode:
CLOSe(@133:136)
!Connect card 01, bank 3, channels 3
through 6 HI and LO terminals, to bank 3 HI
and LO COM terminals. Also connect bank
7, channels 3 through 6 LO terminal, to
bank 7 LO COM terminal.
Four-wire operating mode:
CLOSe(@133:136,233:236)
!Connect cards 01 and 02, bank 3,
channels 3 through 6 HI and LO terminals,
to bank 3 HI and LO COM terminals. Also,
connect bank 7, channels 3 through 6 HI
and LO terminals, to bank 7 HI and LO
COM terminals.
Control relays:
CLOSe (@10995)
!Connect the upper and lower 32 channels
together for a 64-channel two-wire