This type of encoder directly delivers the numeric value of the axis position. The position reading is kept in case of power outage.
Acquisition
Module functions that are used to calculate the position reading of the machine.
Adjusting the Recipe
Adjusting the recipe is a PL7 facility that allows modification of the parameters of a recipe element (axis, cam or track) in connected mode. Modifications done under recipe adjustment do not stop the cam processor.
Alternating movement
This is a typical movement for hydraulic presses and transfer machines. The axis describes a to and fro movement in a pulses domain equal to or less than the value of the cycle.
The "reading format" is type 1. The arrival of parts is synchronized by the machine (Machine Synchro).
Angle reading
This is the instant position value of the axis in the cycle. This value is expressed as a number of pulses.
Anticipation
Cam processor function that is used to compensate for the delay caused by the machine’s actuators.
The anticipation value is applied to all changes of track status. It is specified by the "anticipation factor" defined in the recipe parameters (value between 0 and 32 767 x 50 micro seconds).
Axis
These are all the external elements that control the movements of the machine (reducer, encoder…).
Axis play
This is the position error caused by the axis according to the direction of movement. The cam processor can compensate for this error. The value of axis play is supplied in a configuration parameter.
Cam
Logic state which switches to 1 when an angular value in the cycle is overshot and which resets to 0 according to the type of cam.
A cam is systematically associated to one and only one track. Several cams can be associated to one track.
Cam descriptor
Part of the cam program that characterizes a cam (number of associated track, thresholds, type, confirmation condition, etc.).
Cam processor
This is the part of the module that directly controls the outputs according to the angle reading and according to the cam program supplied with the module.
Cam program
This is all the internal data that defines the activation of the outputs according to the position reading of the axis. The cam program represents the most important part of the recipe.
Capture
A module function that is used to sample the position value of the axis on detection of a precise event (input Icapt0 and/or Icapt1). The capture has no impact on the values of the axis nor on the cam processor.
The implementation of this function allows the application to manage the process better, for example: in monitoring the number of pulses sent by the encoder, the size of the parts, the axis slip, the angle of arrival of the parts.
Cold restart
The module is initialized with current configuration and adjustment parameters.
This happens after the PLC supply has been cut or the supply has been reset or the module has been disconnected.
The module will execute the recipe in operation before the Reset.
Communication fault
Fault detected by the module when periodic exchanges with the PLC processor are no longer made.
Configuration
The configuration gathers together the data which characterizes the machine (invariant) and which is necessary for the TSX CCY 1128 module to operate.
All this information is stored in the PLC %KW constants zone. The PLC application cannot modify them.
Continuous movement
This is the movement typical of conveyor belts. Theoretically the cycle is infinite. In fact, the limit for this module is 32768 pulses. The axis must be recalibrated when each part arrives (Part Synchro).
The "reading format" is type 3.
Cycle
Area in which the action of the outputs can be programmed.
NOTE: A complete cycle of the machine (machine cycle) must be a whole number of cycles.
Cyclical movement
This is the typical movement for packaging machines. The axis describes several cycles to carry out all the operations on a part. The direction of movement is usually constant.
The "reading format" is type 2. The arrival of parts is synchronized by the machine (Machine Synchro).
Debugging
Debugging is a PL7 facility that allows direct monitoring of the module in connected mode.
Deviation angle
This is the axis position reading, taken each time it passes machine zero. This function for measuring axis slip can be accessed via the capture function.
Encoder
Position sensor accepted by the module It can be incremental, SSI absolute or parallel (via Telefast ABE 7CPA11).
Filtering
Filtering allows better environmental handling (for difficult environments). It is a filter that limits the bandwidth of counting signals which come from an incremental encoder.
With filtering the permitted frequency (before multiplying by 4) is 125 KHz, as against 250 KHz without filtering.
Gray code
A binary code known as reflected, in which the change from term n to term n+1 is carried out by changing only a single digit, and so the code can be read unambiguously.
Incremental encoder
Pulse generator with 2 signals offset by 90°. These are produced according to the movement of the axis and are counted by the module.
Line monitoring
System of monitoring the connection lines with the encoder. It detects breaks and short circuits between signals in the cable.
Machine cycle
All of the cycles necessary to effect a complete operation of the machine.
Machine synchro
Synchronization is carried out on a physical reference of the machine called "Machine zero".
In this case the mechanism must control the arrival of the parts in the cycle. Each part will have to arrive for the same angle value, but you will always be able to find several parts on the machine at the same time.
Machine zero
This is the mechanical reference position of the machine.
Measurement format
Defines the format for the axis position reading calculated by the module. It depends on the type of machine.
Offset
This is the rough value delivered by an absolute encoder to the machine zero.
By completing the adjustment parameter "Offset encoder", it is possible to set the angle value of the axis to 0 on the machine zero position.
Operating mode
These are all the rules that govern the performance of the module during transitory phases or when an error appears.
Output fallback
This is the behavior of the outputs under different errors:
If an electrical fault is detected on a connector (short circuit or supply under voltage).
All faulty connector outputs switch to 0V.
Direct commands continue to be applied on the outputs of the other connector. The cam processor can be set to Stop (according to the configuration).
If communication between the module and the central unit is defective.
The cam processor can be set to Stop (according to the configuration)
Direct commands continue to be applied or not (according to the configuration)
If the cam processor is in Stop mode.
The tracks are set to logical 0.
The outputs can no longer be conditioned except by direct commands and INV information set at configuration.
If the module is not configured (RUN light is out), the outputs are at 0V.
Part synchro
Synchronization is carried out when each part arrives.
In this case parts can arrive at random on the machine, but the tool box can only handle one part at a time.
Pulses per cycle
This is the number of pulses delivered by the axis per cycle.
In relation to the encoder resolution, this adjustment parameter must be considered:
after multiplying by 4 for an incremental encoder
after reducing the resolution for an absolute encoder.
Reading inversion
This function allows the module to adapt itself to the type of mechanical mounting of the encoder on the axis.
Recalibration
This is the module function which is used to adjust the axis in relation to the machine zero or to synchronize the axis in relation to the arrival of a part.
Recalibration forces the position reading to a value which is predefined by the "recalibration value" parameter (included in the pulse field of the cycle).
The module allows recalibration to be carried out systematically for each cycle or for only one cycle. This recalibration is always conditioned to the IREC input.
Recipe
The recipe groups together the data required for the module to control the machine for a series of parts. The recipe can be modified or completely changed by the PLC application. All this information is contained in the PLC %MW words in the memory zone reserved for the module.
Reducing the resolution
This function is used to divide the position value delivered by an absolute encoder via the "resolution reduction factor" by 2, 4, 8, 16 or 32.
Resetting
Module function that allows a return to normal for the outputs after the outputs have been tripped.
The reset mode can be configured as "Manual" or "Automatic":
In "Manual", resetting is conditioned by a command bit controlled by the application.
In "Automatic", resetting is carried out 10 seconds after the trip.
Resolution
this is the smallest variation of input information which gives a measurable piece of output information.
Rotating movement
This is a typical movement for mechanical presses and punching machines. The axis describes a complete cycle to carry out all the operations on a part. The direction of rotation is constant.
The "reading format" is type 1. The arrival of parts is synchronized by the machine (Machine Synchro).
Short circuit fault
The module includes a thermal circuit break system for the module's 24 V outputs.
This system shows up a "short circuit fault".
Before a break, the short circuit current is limited to 1.5 A. The 24 V supply must be able to cope with this overload without a drop in voltage so that the rest of the application is not disrupted if there is an output fault.
Slipping
This is the error of pulse loss in a cycle. This can be caused by the mechanical transmission of the axis. The module allows measurement of this slip (see: "deviation angle").
SSI encoder
Synchronous Series Interface link This is the standard connection protocol for absolute encoders that is used by the module.
The transmission frequency is set by the module according to the following configuration parameters:
Number of bits making up the frame,
Reading period (50, 100 or 200 micro seconds).
Synchro
"Part synchro", "Machine synchro": these are the two main modes of synchronization of the axis (which brings the parts in) in relation to the tool box. One or other of them is used according to the type of application.
Synchronization is necessary with an incremental encoder.
Top dead center
With mechanical presses, you find a zone in the cycle which is called TDC. It is in this zone that the machine can and must be stopped. The "brake" cam is specially designed to deal with this problem.
Track
This is the logic state which can be applied to the physical output. The maximum number of tracks is 32.
Track descriptor
Part of the cam program that sets the parameters for the functions associated with a track (anticipation factor, generation of an event, evolution of the parts counter).
Turn pulse marker
A pulse supplied by a rotary incremental encoder, detected on each complete turn of the axis.
Type of cam
Essential feature of a cam. Defines the type of cam calculation according to the angle value (position, monostable or brake command).
Type of movement
This is the feature of the machine that sets the speed cycles on the axis.
Warm restart
The module is initialized with the initial configuration and adjustment parameters.
This happens after a Reset of the CPU.
The module executes the initial recipe. Modifications done in connected mode, are not recognized if a "Save parameters" has not been carried out before the Reset.