SMC_MUX is protocol to communicate with Universal Mux. System developed, in Korea.
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| <Figure 1> Read setting example of SMC_MUX communication driver |
Device part of <Figure 1> input Com Port(COM1), Baud Rate(9600), Parity Bit(0), Data Bit(8), Stop Bit(1) respectively, according to controller.
SMC_MUX driver's read schedule
Read schedule setting parameters are as follows :
1) STATION - STATION number.
2) COMMAND – Don't care.
3) Read Start Address – Don't care.
4) Save start address for Communication Server - Position of ScanBuf at which read value is saved.
5) Read Size – Always fixed as 64 WORD.
Save 8 WORD data of each card to communication memory, because maximum 8 cards(Slot) can be installed.
DI, DO Card – Save 16 bit data per 1 WORD to memory(First WORD of communication memory save address of each card)
AI, AO, RTD, TC Card – Save 8 WORD datas to memory.
READ schedule example)
READ, 1, 0, 0, 0, 64,
READ, 2, 0, 0, 100, 64,
* Empty slot not display the data value at communication memory.
Example ) In case of installing DI card to the third slot, save DI value to communication memory save address + no.16 memory (1 WORD).
Example ) In case of installing AI card to the 8th slot, save AI value to communication memory save address + no.56 ~ no.63 memory (8 WORDs).
You can output to card of DO, AO and etc by using writing settings of SMC_MUX controller.
Digital Write
Digital write setting parameters are as follows :
1) PORT : Setting for PORT number.
2) STATION : STATION number of SMC_MUX.
3) ADDRESS : Card number of current STATION. (0 ~ 7 : Number is defined as equipped slot order)
4) EXTRA1 : DI (Digital Input), DO (Digital Output).
5) EXTRA2 : Bit position of digital. (0 ~ 15).
Write example 1)
PORT : 0 STATION : 1 ADDRESS : 0001 EXTRA1 : DO, EXTRA2 : 3
If you set as above, you can control(ON/OFF) the forth bit value of second slot's DO module of no.1 STATION for SMC_MUX.
Write example 2)
PORT : 0 STATION : 1 ADDRESS : 0001 EXTRA1 : DO, EXTRA2 : 7
If you set as above, you can control(ON/OFF) the 8th(MSB) bit value of second slot's DO module of no.1 STATION for SMC_MUX
Analog Write
Analog write setting parameters are as follows :
1) PORT : Setting for PORT number.
2) STATION : STATION number of SMC_MUX.
3) ADDRESS : Card number of current STATION. (0 ~ 7 : Number is defined as equipped slot order)
4) EXTRA1 : AI (Analog Input), AO (Analog Output), RTD, TC.
5) EXTRA2 : Order number in analog card. (0 ~ 7 : Because 1 analog card has 8 terminals)
Write example 1)
PORT : 0 STATION : 1 ADDRESS : 0002 EXTRA1 : AO, EXTRA2 : 0
If you set as above, you can change the first AO value of SMC_MUX controller's the third slot(card) connected with no.0 port and no.1 STATION.
Write example 2)
PORT : 0 STATION : 1 ADDRESS : 0002 EXTRA1 : AO, EXTRA2 : 7
If you set as above, you can change the 7th AO value of SMC_MUX controller's the third slot(card) connected with no.0 port and no.1 STATION.