GE IS221YAICS1A I/O Pack YAIC
To download projects intended for the CPU320/CRU320 to a CPE330 with versions of PME that do notsupport the CPE330, you must change the CPE330’s compatibility setting. To change the
compatibility setting, perform the following operations:
1. Remove any USB stick that might be attached to the USB connector on the CPE330.
2. Place the RUN/STOP switch on the CPE330 in the STOP position.
3. Hold down the RDSD UPLD button and turn power on to the CPE330. Continue to depress the RDSD
UPLD button until the CPE330 powers up and displays one of the following patterns on the LEDs.
CPU Status Indicators
On Blinking Off
CPE330 LED LED State Operating State
CPU OK On Amber
On Amber
CPU320 Compatibility mode.
FORCE
RUN Off
RDSD On Red
OUT EN Off
SYS FLT On Red
CPU OK On Amber CRU320 Compatibility mode.
FORCE On Amber
RUN On Red
RDSD Off
OUT EN Off
SYS FLT On Red
i. To toggle the compatibility setting, press the RDSD DNLD button. The compatibility indication will
toggle between the CPU320 compatibility and CRU320 compatibility patterns each time the RDSD
DNLD button is pressed.
ii. When the desired compatibility setting is displayed, press the RDSD UPLD button to save the setting
and allow the CPE330 to continue its normal startup procedures with the new setting. The setting is
maintained over a power cycle and firmware upgrade.
Note that with versions of PME that do not have native CPE330 support, only CPU320 projects can be
stored to a CPE330 that is in CPU320 compatibility mode. Similarly, only CRU320 projects can be
stored to a CPE330 that is in CRU320 compatibility mode.
Users of a CPE330 with PME versions 8.60 SIM8 or later do not need to change this compatibility
setting. PME versions 8.60 SIM8 or later allow for storing a CPU320 or CRU320 project without the
need to change this setting. By factory default, the CPE330 identifies as a CPU320.
Note that CPE330s with firmware versions 8.45 through 8.60 support compatibility with the CPU320
and CPU315 only. The compatibility setting using the RDSD buttons (described above) is not
supported for these firmware versions. Beginning with firmware version 8.70, CPE330s support
compatibility with the CPU320, CPU315, and CRU320 using the RDSD buttons to set the compatibility
setting.

The RDSD and RUN/STOP Switches are located behind the protective door, as shown in Figure 15 and
Figure 16. Refer to RUN/STOP Switch Operation in Chapter 4. The Reset pushbutton is not used.
Figure 15: External Features of CPE305 Figure 16: External Features of CPE310
RDSD Switch Operation CPE305 & CPE310
RDSD Switches Function
Start pushbutton Pressing this switch initiates RDSD data transfer. (The three-position switch must
have previously been set to Upload or Download.)
See Removable Data Storage Devices (RDSDs) for full description of RDSD
functionality.
Three-position switch Enables/disables RDSD data transfer and selects the direction of data transfer.
Upload Loads application from CPU to RDSD.
Off Disables RDSD data transfer.
Download Stores application from RDSD to CPU.