With the rapid development of packaging industry and packaging machines diversification, the matching modes between packaging machines and combination weigher have similarities and differences. First, the matching modes between packaging machines and combination weigher can be divided into three ways: multihead weigher as master, packaging machine as master and open control. Secondly, according to different ways of packaging machine output signals, it can be divided into seven kinds of ways: uniform type, feedback type, several intermittent, single on-demand, has been output type, ready-type and single-phase type. Base on the seven request signal types, we classify the type of packaging machines, its matching modes with combination weigher, and signal detection mode of weigher as the following:

The way of selecting of correct connecting mode: when packaging machine is ready and no 'discharge request' signal output, we should use multihead weigher as master. If it output 'discharge request', use packaging machine as master. If multihead weigher connects with pouch giving machine, use open control.
After selecting connecting mode, please do as follows:
Number 1, Multihead weigher as master: When the combination and weigh is ready, send firstly the "ready for combination" signal. After receiving the "ready for combination" signal, the packaging machine immediately send to the combination weigher "discharge request" and begin to pack after some delay
Connecting methods: The signal connection wire of back equipment has elicited  discharged signal 1 (P061A、P061B,Welding in KJ1 1,2 feet),when using ready signal, please choose P063A、P063B(Welding in KJ1 3,4 feet).
Number 2, Packaging machine as master:Packaging machine will firstly send "discharge request" to the combination weigher and wait for the material dumped from the combination weigher. After dumping material to the packaging machine, combination weigher delays some time (can be adjustable) and then feedbacks the "discharged" signal. Then the packaging machine begins to pack.
Connecting methods: The signal wire of back equipment connects discharged
signal 1(P061A、P061B)and discharge request signal 1(P068A、P068B)directly.
Number 3, Open control: Each time the packaging machine finishes a procedure, it sends to the combination weigher a "discharge request" within its working circle time.
Connecting methods: The signal wire of back equipment only needs to connect the discharge request signal 1(P068A、P068B).
Because there are many 'discharge request' signals for packaging machine, in order to ensure the system work correctly, we add some discharge signal accordingly, such as: Pulse with memory, Tension without memory, Tension with memory, Pulse without memory. We will introduce the setup skills of choosing signal detection modes in four steps: Analysis, Setup, Solution, and Judgment (refer to the above chart) as following:

1. Analysis:'Uniform type' refers to packaging machine keep outputting discharge request evenly.
Setup:Dump signal 1 or 3(without memory).
Solution:To make sure the whole system work correctly ( no material jamming),it must be used as without memory;(It can be used as with memory when the preset speed of packaging machine is faster than combination weighers.);if it is used as with memory, it will result in two discharge in close interval when there is no qualified combination for one time.
(For the speed of combination weigher is faster than packaging machine)
Judgment:Looking at the indicator light, the speed of outputting signal is the same to preset speed of packaging machine; when multihead weigher is on pause status, packaging machine still output signal.

2. Analysis:'Feedback type' refers to packaging machine will keep outputting discharge request after readiness until receive discharged signal from multihead weigher and then disconnect.
Setup:Dump signal as 3(Tension without memory).
Solution: Firstly we can judge that the dump signal mode should be tension, if it is set up as with memory, it will result in material jamming.
Judgment:Looking at the PLC indicator light, the light will be lightening all the time if the multihead weigher is on pause status, and it will be off when short circuit the signal cable.

3. Analysis:'Several intermittent' refers to packaging machine keep outputting discharge request without stopping, two signals for one time .
Setup:Dump signal 1 or 3 (without memory)
Solution:If it is set up as with memory, multihead weigher will discharge material and memorize the second signal. It will result in material jamming owning to close interval between two discharges (The speed of multihead weigher is faster than packaging machine).
Judgment:Looking at the PLC indicator light, it will output two signals and next two signals with some delay).

4. Analysis:'Single on-demand' means packaging machine will output a' discharge request' signal after it is ready, and it will output next 'discharge request'signal only after receiving 'discharged' signal from multihead weigher.
Setup:Dump signal 0 or 2(with memory)
Solution:Set up the dump signal as with memory (when combination is not finished but multihead weigher can memorized the signal, then discharge and output 'discharged' signal), if the dump signal is set up as without memory(Multihead weigher receive discharge request only after combination is finished, when there is no qualified combination for one time, multihead weigher cannot memorize the signal and packaging machine stop outputting signal, the whole packaging system will be on pause status).
Judgment:If packaging machine work first and multihead weigher can't work, the signal packaging machine output must be as wave 1; if multihead weigher work first and sometimes the system will be on pause status (multihead weigher don't memorize the signal),and the system work again after short-circuit discharged signal cable, please use the with memory in this situation;you also can judge it by PLC indicator light.

5. Analysis:'Has been output type' refers to packaging machine will keep outputting signal without disconnection.
Setup:Dump Signal 2(Tension with memory).
Solution: Firstly we can judge that the dump signal mode should be tension, 'Discharge request 3'is not suitable because it takes effect just only from disconnection to connection.
Judgment:Looking at PLC indicator light, it won't go if only the packaging machine is ready.

6. Analysis:'Ready-type' means packaging machine will not output a' discharge request' signal after it is ready, and it will output 'discharge request’ signal only after receiving 'ready' signal from multihead weigher.
Setup:Dump Signal 0,1,2,3.
Solution: Packaging machine will output a request signal at once after receiving the ready signal, and it will output 'discharge request' signal only after receiving 'ready'signal from multihead weigher again. The request signal of packaging machine can be see as contact signal,so dump signals 0,1,2,3 are available.
Judgment:Looking at PLC indicator light, it won't be on if only the packaging machine is ready, and it will spark for one time  when short circuit the signal cable for once.

7. Analysis:'Single-phase type'refers to it will run automatically after packaging machine is ready, don't need any signal from combination weigher, and meanwhile keep outputting discharge request evenly.
Setup:Dump Signal 1 or 3.
Solution: Pouch giving packaging machine runs automatically, which requires when receiving a request signal, combination weigher must discharge material synchronously. If the request signal is set up as with memory, when combination is not finished but multihead weigher can memorized the signal, once ready it will discharge material, but easy occurs desynchronized discharging 
Judgment:You can judge it by PLC indicator light.
Finally we need to connect the feeding signal(P067A, P067B)with Z conveyer to make the whole packaging system work correctly.

Description: The other system parameter setup, please refer to Section One System setup menu or manual.