ABB DSDO 131 DSDO131 Serial Link Controller

The following illustration shows the pins of the ASM 424 (DB 9 female connector) and the MVI46-3964R used for a RS-422 connection. The ASM 424 needs an external 24V DC power supply for operation.The cable must be made according to the RS-422 specifications. In addition to this, you should also check your (ground) cabling to avoid ground loops.The instructions have to be programmed in the SLC processor according to this specification and transferred into the MVI46-3964R. The MVI46-3964R subsequently communicates with the ASM 424 via 3964R to manipulate the MDS according to your requirements. It is possible to use either the "normal mode" or the "ECC special driver" to interface to the MDS. The SLC processor example program itself will be explained in Ladder Logic

MOBY Instruction Set ASM 424 

This section contains a short overview about the MOBY instruction set and its realization in the SLC processor example program. As mentioned before, the ASM 424 makes no difference between MOBY-I and MOBY-E, therefore all instructions are valid for both systems. The concrete MOBY instruction set is described in detail in the Programming Reference, MOBY C-Library MOBY API on the CD "Software Moby", Publication No. 6GT2 080-2AA10. Please refer to that manual for additional information.

MOBY-Instruction: MDS-INIT

 Implementation in the SLC processor example program: This instruction uses the "normal mode" of the MDS. If you want to use the "ECC special driver", you have to change the instruction command as explained in the programming reference. MOBY-Instruction: DATA WRITE Implementation in the SLC processor example program: This instruction uses the "normal mode" of the MDS. If you want to use the "ECC special driver", you have to change the instruction command as explained in the programming reference. In our example we write 20 bytes to the MDS.

 Brand display

 ABB、GE/FUANC、FOXBORO、TRICONEX 、BENTLY、A-B、EMERSON 、MOTOROLA、XYVOM、HONEYWELL 、REXROTH、KUKA、NI、DEIF、Yokogawa、WOODWARD、Reliance Electric、SCHNEIDER 、MOOG、PROSOFT、KOLLMORGEN、ICS TRIPLEX、HIMA。