Ransburg DynaFlow User Manual - Manual (Page 24)

LN-9400-00.9
DynaFlow TM User Manual - Installation
20
INTERFACING TO THE
FLOW CONTROLLER
System I/O
SYSTEM INPUTS
Input
Signals
Description
JOB Select
Inputs
JOB Strobe
Input
System Ready/
Halt Input
Global GUN
Enable
These inputs are used to select a JOB number from the external PLC or other host controller.
These inputs represent Binary Coded Decimal (BCD) that translates to 3 digits, each digit
represented as a 4-bit binary code. The JOB Select inputs are used in conjunction with the
GUN Mask inputs to determine which GUNs will accept the JOB number represented by the
total of the active JOB Select Bits. See "Operation" section of this manual for details. These
signals must be asserted prior to the JOB Strobe Input and held on slightly after the strobe
signal goes low.
JOB Strobe requires a pulsed signal of at least 0.25 seconds duration. This signal is used in
conjunction with the GUN MASK inputs and program select inputs to activate a new JOB # for
any or all GUNs. When the controller detects this input, the program select inputs and GUN
MASK inputs are read and action taken to load the new JOB # in the JOB # QUEUE. The new
program select and GUN MASK inputs must be present before the PROGRAM SET STROBE
is activated. Reference "Job Selection Timing Diagram Sample" in the "Operation" section.
System Ready/Halt is a maintained signal that permits activation of any or all GUNs. For the
controller to operate, this signal must be maintained in the high state (24 VDC). When this
signal is active, the system Ready/Halt output will be held ON.
If the signal is lost, ALL GUNs will stop and the READY output is turned OFF. The GUNs must
be restarted in the normal manner when this signal is again activated. The JOB # QUEUE for
any GUN is not effected by the state of this input.
The Global GUN Enable is a maintained signal that overrides all of the individual External
Fault/Enable GUN inputs. Reference "GUN INPUTS". This is most useful when using RIO,
RS-485, or RS-232C control and the discrete GUN I/O is not used through J3, J4, J5, or J6
of the mother board.
Description
System Pulse
Output
System Fault
System Spare
The System Pulse output can be used as a watchdog function by a PLC or other external
controller to determine if the flow controller is operating normally. The output is a 50% duty
cycle, 0.5 HZ signal (2 pulses per second).
A high signal on this output indicates that a system, GUN or other fault has occurred. The
type of fault that causes this output to activate is selectable by the Horn Code located in the
System Configuration table.
Not used presently.
SYSTEM OUTPUTS
Output
Signals