CTI 2500C-C200 CPU with 256K User Memory



2500C-C200 CPU with 256K User Memory

The 2500C-C200 CPU provides discrete, analog, loop, advanced mathematical, and high-speed sequential control capability for your CTI 2500 Series® Compact control system.

Features

Compatible with programs written for Siemens® 545-1101. 545-1102. 545-1104. 545-1106. CTI 2500-C200

256K user memory

2048 digital / 1024 analog I/O

64 loops / 128 alarms

Built-in Ethernet for programming and MMI

Built-in USB for programming

Profibus-DP master and RS485 Remote I/O ports

Built-in SD flash card slot forfirmware update

IMPORTANT NOTE: This product includes a lithium battery for backing up the user program, retentive variables, and

system diagnostics.  For safety in transportation, the battery is installed but disabled.  Prior to putting this product into

service, you MUST move dipswitch SW1 to the CLOSED position to enable the battery.

COMPATIBILITY OVERVIEW

The CTI 2500 Series® Compact Processor is designed to be compatible with customer applications that use the Simatic®

545 and 555 controllers. While the CTI 2500 Series®  matches or exceeds the capabilities of these processors in most

aspects, there are a few areas in which the CTI 2500 Series® operates differently.

Relay Ladder Logic

The RLL used in the controller provides equivalent instructions for all Simatic® 555 instructions except the XSUB

instruction. External subroutines are not supported. If you download a program containing the XSUB instruction, it will be

ignored. In many cases XSUB is used for communications with Siemens® Profibus HMI panels. For these installations

we have a CTI program free on our website which replaces the XSUB. For XSUB uses other than Siemens® HMI panels,

CTI and our partners can develop XSUB replacement software using SF programming. Please contact us.

Special Function Programs

The controller compiles all SF programs and subroutines. They are compiled in the following situations:

• When a user program is downloaded to the PLC, if the SF Program or subroutine is enabled,

• When the SF program or subroutine is enabled, if the SF program has been modified,

• During a Power Up start (following the application of power).

Programs that contain errors will not be enabled. During a program download, Workshop will display a message

indicating the error. Once you acknowledge the message, the download will continue, leaving the program disabled. You

must correct the programming error before the program or subroutine can be enabled. User Programs originally written

for the Simatic® 505 PLC may contain undetected errors, if the programs were not originally compiled. This can occur

because the SF interpreter never attempts to execute the instruction due to the branching logic. A common problem is

that additional ENDIF statements are included or the correct number of ENDIF statements is not present.

Unlike the Simatic® 555. there are no restrictions regarding the instructions that can be used in a compiled program.

User Configuration

The following differences in the user configuration should be noted:

1. Allocation of CS memory is not supported. The CTI 2500 Series® controller uses high speed DRAM to store and

execute compiled SF programs and subroutines. Consequently, CS memory is not required.

2. User allocation of User Subroutine memory is not supported. The CTI 2500 controller does not support user

subroutines (XSUB). See XSUB description above.

3. A time slice for Report by Exception (RBE) is not supported. Some alternative solutions exist. Please consult us with

your exact configuration.

4. A new time slice, Network Communications, has been added to support the local Ethernet port.