GE IS200STCIS1A, S2A 24 discrete inputs
2.1.1 Features Shared by All PACSystems CPU Models▪ Programming in Ladder Diagram, Function Block Diagram, Structured Text and C.
▪ Floating point (real) data functions.
▪ Configurable data and program memory.
▪ Non-volatile built-in flash memory for user data (program, configuration, register data, and
symbolic variable) storage. Use of this flash memory is optional.
▪ Configurable RUN/STOP Mode switch.
▪ Embedded serial and/or Ethernet communications (refer to comparison charts in RX3i CPU
Features and Specifications, RX7i CPU Features and Specifications and RSTi-EP CPU Features
and Specifications).
▪ Up to 512 program blocks. Maximum size for a block is 128KB.
▪ Auto Located Symbolic Variables, which allows you to create a variable without specifying a
reference address.
▪ Bulk memory area accessed via reference table %W. The upper limit of this memory area can
be configured to the maximum available user RAM.
▪ Larger reference table sizes, compared to Series 90* CPUs: 32Kbits for discrete %I and %Q
and up to 32K words each for analog %AI and %AQ.
▪ Online Editing mode that allows you to easily test modifications to a running program. (For
details on using this feature, refer to the programming software online help and Proficy Logic
Developer Getting Started, GFK-1918.)
▪ Bit in word referencing that allows you to specify individual bits in a WORD reference in
retentive memory as inputs and outputs of Boolean expressions, function blocks, and calls
that accept bit parameters.
▪ In-system upgradeable firmware for CPU
▪ Indirect mechanism for upgrading firmware in backplane modules via the CPU.
2.1.2 Features Shared by Certain PACSystems CPU Models
▪ Rx3i CPE305, CPE310, CPE330 and CPE400 have battery-less retention of user memory when
each is connected to its compatible Energy Pack. RSTi-EP CPE100 offers battery-less retention
of user memory with the support of internal super capacitors.
▪ All prior models have battery-backed RAM for user data (program, configuration, register
data, and symbolic variable) storage and clocks.
▪ Rx3i CPE305, CPE310, CPE330 and CPE400 and RSTi-EP CPE100 models have coin battery
backup for their real-time clocks (elapsed time clock).
▪ RX3i CPE305, CPE310 and CPE330 models have the ability to upload and download data from
a Removable Data Storage Device (RDSD). This feature is pending on RX3i CPE400 and RSTiEP CPE100.
▪ RX3i CPE305, CPE310, CPE330 and CPE400 models support OPC-UA. This feature is pending
on RSTi-EP CPE100.
▪ RX3i CPE305, CPE310, CPE330, CPE400 and RSTi-EP CPE100 models support Ethernet Global
Data Class 1.

2.1.3 Firmware Storage in Flash Memory
The CPU uses non-volatile flash memory for storing the operating system firmware. This allows
firmware to be updated without disassembling the module or replacing EPROMs. The operating
system firmware is updated by connecting to the CPU with a PC compatible computer and running
the software included with the firmware upgrade kit.
Each upgrade kit contains specific instructions for performing the upgrade. Depending on the CPU
Model and Firmware Version, the method employed is one of the following:
a) Use a serial port and the WinLoader utility (applies to CPU310, CPU315 & CPU320 models and
to CPE305/CPE310 models containing firmware versions prior to v7.30)
b) Use a USB port and memory stick for CPE305/CPE310 models with firmware version 7.30 and
later
c) Use an Ethernet port and a Web-based mechanism for RXi CPUs, RX3i CPE330, CPE400 and
RSTi-EP CPE100.
2.1.4 Operation, Protection, and Module Status
Operation of the CPU can be controlled by the three-position RUN/STOP Switch or remotely by an
attached programmer and programming software. Program and configuration data can be locked
through software passwords. The status of the CPU is indicated by the CPU LEDs on the front of the
module. For details, see Indicators for each PACSystems family.
Note: The RESET pushbutton is provided to support future features and has no effect on CPU
operation in the current version.
2.1.5 Ethernet Global Data
Notes: Effective with RX3i Firmware Release 8.302
, the CPE310/CPE305 CPUs also support EGD
Class 1. Prior to that firmware release, EGD was only available in the RX3i via the RX3i
Ethernet Interface Module (ETM001).
Effective with RX3i Firmware Release 8.603
, CPE330 also supports EGD Class 1. This feature is
available on all firmware releases of RX3i CPE400 and RSTi-EP CPE100.
Each PACSystems CPU supports up to 255 simultaneous EGD pages across all Ethernet interfaces in
the Controller. EGD pages must be configured in the programming software and stored into the CPU.
The EGD configuration can also be loaded from the CPU into the programming software. Both
produced and consumed pages can be configured. PACSystems CPUs support the use of only part of
a consumed EGD page, and EGD page production and consumption to the broadcast IP address of
the local subnet.
The PACSystems CPU supports 2ms EGD page production and timeout resolution. EGD pages can be
configured for a production period of 0, indicating the page is to be produced every output scan. The
minimum period for these “as fast as possible” pages is 2 ms. Refer to the section, A3.6 for EGD
configuration on Embedded Ethernet interface of CPE305/310.
During EGD configuration, PACSystems Ethernet interfaces are identified by their Rack/Slot location.