|Model 2620 | 4-Channel Counter/Incremental Encoder Interface Module|
Model 2620 is a modular, four-channel counter/timer interface that connects to Ethernet through a 2601 communication module. It has four advanced 32-bit counter channels that can directly interface to incremental encoders as well as single-clock sources. Network latency is mitigated by providing timestamps along with all counter values read by the host computer. Model 2620 is a member of the 2600 series of smart I/O modules.
Four inputs are provided on each channel: enable, index, and two clocks. The clock and index inputs accept both differential RS-422 and single-ended TTL/CMOS compatible signals. Each channel has one output signal that can be used for PWM or pulse generation.
All field wiring is connected directly to the 2620 via removable terminal blocks, which are supplied with the module. These eliminate the need for external terminal blocks and make module installation and removal a snap.
Each counter channel can be independently configured to implement any of these popular functions:
A 2620 module can be connected to any of the sixteen IOM (I/O module) ports on the 2601 with a low-cost category-5 patch cable, which provides all operating power and communication signals needed by the 2620. All inter-module communication circuits are optically isolated to prevent potentially disruptive ground loops.