Connecting MX modules to a CX23-R
A CX23-R module can be used to control and process data from multiple MX modules to include other transducers such as voltage, current, bridge and thermocouple. MX modules can be connected directly to the CX23-R module or through one or more EX23-R Ethernet switches. Refer to the MX Modules User Manual for more information on using MX modules.
Refer to the CX23-R and EX23-R User Manual for more information.
NOTE
The CX23-R automatically configures the MX module network address and checks for firmware updates. If necessary, install new MX firmware before continuing. Do not reboot the CX23-R when MX firmware updates are in progress.
CAUTION
When using FireWire to power MX modules, make sure that all modules have an Ethernet connection to the CX23-R unit or EX23-R switch. Failure to do so may cause undetected synchronization errors in all linked MX modules.

NOTE
The CX23-R AUX PWR connector can power a maximum of two MX modules.
- To power the first MX module, connect the CX23-R AUX PWR connector to the X104 connector on the first MX module using a 1-KAB2110 cable.
CAUTION
Do not exceed 5 A current draw from the CX23-R AUX PWR connector.
- To power the second MX module, use a 1-KAB272 cable from the X101 or X102 connector on first MX module to the X101 or X102 connector on the second MX module.
- Connect the CX23-R ETHERNET1 and ETHERNET2 connectors to the MX module X100 connectors using KAB2100 cables. This establishes communication and synchronization between the CX23-R and MX modules.

- Connect the CX23‑R, EX23‑R and MX modules to a power supply.
NOTE
When designing the power system, note that increased cable lengths can produce significant voltage drops at the module connectors, especially when using PoE or powering multiple modules from one source.
NOTE
MX modules may also be powered in serial using FireWire connections. Refer to the MX Modules User Manual for details.
- Use a 1‑KAB2107 cable to connect the CX23-R ETHERNET1 connector to the EX23‑R switch.
NOTE
For optimal data throughput performance, do not use both CX23‑R Ethernet ports when using EX23‑R modules.
To use multiple EX23‑R modules, connect any Ethernet port on the new EX23‑R module to any open EX23‑R Ethernet port.
NOTE
For a CX23-R to EX23-R and EX23-R to EX23-R connection use the Gigabit Ethernet ports (10/100/1000, Ports 1 to 4 or Ports 7 PoE to 10 PoE) on the
EX23-R.
- Use 1‑KAB2100 cables to connect the MX module X100 connectors to the EX23‑R switch.

Do not reboot the CX23-R when MX firmware updates are in progress.