Electro Cam PS-6000 Series - Manual (Page 2)

PL
µ
S Controllers are Fast!
As the system in Figure 1 shows, the PL
µ
S monitors the pro-
duction line every 300 to 500
µ
sec, approximately 100 times
faster than an average PLC with its more extensive program-
ming. Although the PLC does interface directly with the produc-
tion line, the functions it controls are lower speed, and deals
more with the logic functions necessary for machine control.
For high speed, critical functions such as label-to-product reg-
istration, the PL
µ
S provides faster control and improved preci-
sion, reducing scrap and rejects.
PL
µ
S Controllers have Built-In DC Inputs & Outputs!
Using transistor outputs, the PL
µ
S can signal changes to the
PLC within 300 to 500
µ
sec (as fast as 40
µ
sec on special mod-
els); much faster than the serial communications speed of ap-
proximately 50 msec. When product sensors send a signal to
the DC input of the PL
µ
S, the PL
µ
S responds to that signal
quickly.
PL
µ
S Controllers have Serial Communications!
For product changeovers, the PLC can send commands and
operating parameters to the PL
µ
S controller to change setpoint
programs. This eliminates the need for an operator to manually
change programs through the PL
µ
S keyboard.
PL
µ
S Controllers Save PLC Memory!
The PL
µ
S controller can store many programs containing vari-
ous setpoints for the production line. The PLC need only select
the correct program, and the PL
µ
S will do the rest.
PL
µ
S Controllers Simplify PLC Programming!
By handling complex functions like speed compensation, timed
outputs, and sensor gating, the PL
µ
S controller relieves a pro-
grammer of having to write complicated PLC control program-
ming from scratch. The PLC software can simply exchange
process variables and control data with the PL
µ
S controller,
which handles direct high speed machine control through its
own dedicated software
.
PL
µ
S Controllers Simplify Operator Interface Design!
Many production lines require an operator to select product
sizes or configurations through a keyboard. The 1/4 DIN key-
pad/display of the PS-6000 can be mounted near the produc-
tion machinery, giving an operator easy access to critical con-
trol functions. The keypad transmits these changes back
through the PL
µ
S controller to the PLC, eliminating the need
for a PLC system designer to supply custom operator interface
software and hardware for PLS functions.
Electro Cam Corp. has Systems Experience!
Our standard PL
µ
S controllers feature extensive capabilities
for integration into larger control systems, PLC based or other-
wise. We can supply IBM-PC compatible PLuSNet software to
facilitate communications between our controllers and a host
computer. In addition, we can supply controllers with custom
features such as shift-register capability, or the ability to func-
tion in non-rotary environments. For information on our sys-
tems capabilities, please call our toll free number.
800-228-5487
PL
µ
S Controllers Enhance PLC Systems
Figure 1
2