CTI 2559-FPC I/O Connectors for the 2556-A

The CTI 2502 Two-Channel High Speed Counter Input Module is a member of Control

Technology’s family of I/O modules compatible with CTI 2500 Series™ and Simatic® 505

programmable controllers. It is designed to count pulses on the inputs and return the

current count and status to the controller.

Active LED

The Active LED will be illuminated when the module is functioning normally. If the Active

LED is not lit, or if it is blinking, refer to Chapter 3 for troubleshooting.

Asynchronous Operation

The module operates asynchronously with respect to the PLC.   The controller is

programmed to monitor and control the operation of the High Speed Counter module using

the words and bits provided in the module interface.  The module provides reset, inhibit,

output, and counter status in three WX input words.  The controller uses 5 WY output words

to control counting, control outputs, and set counter presets.

Inputs

The 2502 Two-Channel High Speed Counter Module has two independent counting

channels.  Each channel has four inputs. Each input may be used as either sinking or

sourcing (with external 5–24 VDC power supply). The input signals are connected to the

field wiring terminal block.

Reset - Current flow through the reset input sets the channel’s counter to

zero. The counter will be held at zero until the reset input becomes

inactive.

Inhibit - Current flow through the inhibit input inhibits the channel from

counting. The counter holds at the last value and does not change until the

inhibit input becomes inactive.

Counter Input A, Counter Input B - The relationship of the states of these two inputs,

combined with the counter mode setting, determines the direction of the count. Typical

devices for counting are high-speed static switches or incremental encoders.

WOODHEAD SST-DN3-PCU-2( E) PCI DEVICENET INTERFACE CARD DN3-PCU-2(E) V1.2.8

SST Woodhead SST-ESR2-CLX-RLL Ethernet Modbus/Serial Modbus Communication

Woodhead PB3-PCIe 2 SST-PB3-PCIE 1 V1.1.0 Communication card

MOLEX SST-DN4-PCIE-H / SSTDN4PCIEH 

SST 5136-PFB-PCI Profibus Communications Adapter Module

CTI 901B-2500-RBC Profibus Remote Base Controller

CTI 901B-2500-RBC Profibus Remote Base Controller

CTI Control Techniques 901D-2500-RBC Profibus Remote Base Controller

CTI 2500-RIO-B RS485 Remote Base Controller

CTI 2500C-RBC-RS485 RS485 Remote Base Controller

CTI Control Technology 901E-2589-A Input Module PCB 

WOODHEAD SST DHP-PCI V1.2.0 SD-PCI-U DATA HIGHWAY PLUS INTERFACE CARD

Molex SST-PB3-VME-2 Brad Communication Board SSTPB3VME2E

AMAT 0190-34511 REV. 08 SST woodhead DNet bus scanner DNPCPCI3U1-NC- 3V V1.3.4

WOODHEAD SST-DN3-PCU-1 DEVICENET INTERFACE CARD

SST / WOODHEAD 5136-PFB-VME PROFIBUS INTERFACE CARD 5136PFBVME NIB