CTI 2500 Series

FEATURES

• Replaces all Simatic® 545 and 555 models 

• Built-in Ethernet and USB ports for programming 

• Built-in SD Flash card for firmware update from flash 

• Built-in Profibus and RS485 Remote I/O on C200, C300, and C400 models 

• Up to 3Mbytes memory, 8192 I/O points, 512 PID loops & 512 alarms, depending on model 

• Programmable using Workshop

• Integrity® Real Time Operating System for high-reliability and security

SPECIFICATIONS

Ports:

Ethernet, 100Mbit, RJ45 RS232C: DB9 male Profibus: 12Mbit, DB9 female Remote I/O: DB9 male SD Flash card: up to 32G bytes (with Firmware V6.18 and higher) Expansion port: future useUser Memory:

2500-C100: 128K 2500-C200: 256K 2500-C300: 512K 2500-C400: 3072K

Loops / Alarms:

2500-C100: 16 / 32 2500-C200: 64/ 128 2500-C300: 512 / 512 2500-C400: 512 / 512

Status Display: 3-Digit LED display for system status, error reporting and IP address

Backplane Power: 7 Watts (maximum)

Operating Temperature: 0 o to 60oC

Storage Temperature: -40o to 85oC 

Relative Humidity: 5% to 95%

Agency Approvals: CE, UL UL-C, Class 1 Div 2

Shipping Weight: 1.5 lb. (0.68 Kg)

DESCRIPTION

The 2500 Series® Controllers bring exciting new features and a new level of process performance to Simatic® 505® Control Systems. The C100 and C200 models easily handle medium to large discrete control applications, as well as basic process applications. The C300 and C400 models are equipped to handle large process applications with many PID loops and alarms and special mathematical functions. The 2500 Series® Controllers are designed to seamlessly replace all Simatic® 545 and 555 controllers while providing much higher performance at lower cost. The controllers are supported by a complete range of digital, analog, and specialized I/O modules, power supplies, and I/O bases, all available from CTI.

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® Processor is designed to be compatible with customer applications that use the Simatic® 545 and 555 controllers. While the CTI 2500 matches or exceeds the capabilities of these processors in most aspects, there are a few areas in which the CTI 2500 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 ddownload, 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 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.

I/O Support

The following are not presently supported. This is subject to change.

• Interrupt I/O

Support of Special Function Modules

Most CTI and Siemens special function modules are supported. A complete list showing the compatibility status by module part number is maintained in the Technical Advisory which can be found here:

Ethernet Access Port 4452: One TCP connection for programming software. This port receives priority in communications. Ports 1505 or 4450: Three TCP connections for data access.

2500-Cxxx Programmable Controllers Model Comparison