GE IS420YVIBS1A YVIB
2.2.3.5 Real-Time Clock Battery CPE305 & CPE310
The CPE305 and CPE310 are both shipped with a
real-time clock (RTC) battery (IC690ACC001) installed
(Figure 17), and with an isolation barrier on the
battery. Remove the isolation barrier via its pull-tab
before installing the CPE305 or CPE310 module;
otherwise the battery will not function.
There are no diagnostics or indicators to monitor
RTC battery status.
The RTC battery has an estimated life of 5 years and
must be replaced every 5 years on a preventative
maintenance schedule.
If the RTC battery fails, the CPU date and time is
reset to 12:00 AM, 01-10-2000 at startup. The CPU
operates normally with a failed or missing RTC
battery; only the initial CPU TOD clock information
will be incorrect.
Note: Battery replacement on CPE330 is different.
Refer to Figure 12.
Figure 17: Accessing Real-Time Clock Battery
(CPE305 and CPE310)
Replacing the Real-Time Clock Battery in CPE305/CPE310
The replacement battery must be IC690ACC001 from GE Automation & Controls, or an equivalent,
such as Rayovac Lithium BR2032 Coin Cell 3V 190mAh -40°C to +85°C.
Warning
Use of a different type of battery than that specified here
may present a risk of fire or explosion.
Battery may explode if mistreated. Do not recharge,
disassemble, heat above 100°C (212°F), or incinerate.
Caution
To avoid damage from electrostatic discharge, use proper
precautions when performing these procedures:
▪ Wear a properly functioning antistatic strap and be sure that you
are fully grounded. Never touch the printed circuit board, or
components on the board, unless you are wearing an antistatic
strap.
▪ Any surface upon which you place the unprotected circuit board
should be static-safe, facilitated by antistatic mats if possible.
Extra caution should be taken in cold, dry weather, when static charges can
easily build up

2.2.3.6 Backwards Compatibility of CPE310 with CPU310
The CPE310 may be swapped with a CPU310 with no upgrade to the Proficy Machine Edition Logic
Developer-PLC programming software. Logic and configuration equality in the programming
software is maintained when storing the same project to either a CPU310 or a CPE310. Proficy
Machine Edition versions that recognize the CPE310 (7.0 SIM3 and newer), allow either a CPU310
configuration or a CPE310 configuration to be stored to the CPE310. For all programming software
versions (both current and legacy) a CPU310 device can accept only a CPU310 configuration.
Legacy CPU310 Projects
The CPE310 supports CPU310 projects. Proficy Machine Edition versions earlier than 7.10 SIM 3
interpret the CPE310 as a CPU310. The CPE310 can be configured as a CPU310 using Proficy Machine
Edition versions as old as 5.5, Service Pack 1.
RDSD Port
If a CPU310 configuration is stored to a CPE310, the RDSD port is enabled to allow you to transfer
CPU310 projects to CPE310 models without using Proficy Machine Edition.
Fault Behavior
Faults related to the embedded CPE310 Ethernet interface may be generated on power-up, as
detailed in the following section.
Replacing a CPU310 with a CPE310
▪ A CPE310 that is configured as a CPU310 logs the following faults in the Controller fault table:
- A LAN Transceiver Fault is generated because the RX3i system detects that the embedded
Ethernet module does not have a network connection.
- An Extra Option Module fault is generated because the embedded Ethernet module is
detected as an unconfigured module.
- If the Energy Pack capacitor pack is disconnected or fails, the legacy faults for a missing or
failed battery are logged.
▪ When a CPE310 is configured as a CPU310, Ethernet properties cannot be configured and there
should be no cable connected to the Ethernet port.
▪ When a CPE310 is configured as a CPU310, the Show Status dialog box in Proficy Machine Edition
display