The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

PACIFIC SCIENTIFIC 33VM52-000-29 module

The resistance for end of line (120 Ω 1/4W) is already integrated into the NCB. The terminals IN have to be connected to the above CS31 bus segment (CS31 master side) for the handling of diagnosis. The choice of the CS31 bus cable is very important to reach long distance communication and to avoid disturbances in communication.

The cable has to be chosen according on the following rule : *L1 + L2 + L3 + L4 < 1200 m The standard cable can be used (check general characteristics chapter 1) *1200 m < L1 + L2 + L3 + L4 < 1500 m Cable characteristics – twisted pair (nb twists > 10 per meters) – capacitance : C < 100 nF/km (100 pF/m) – impedance characteristic : 80 to 120 Ohms (= √L/C with L : inductance) – transmission velocity (= 1/√LC) > 55 % light velocity (300 000 km/s) *1200 m < L1 + L2 + L3 + L4 < 2000 m Cable characteristics – twisted pair (nb twists > 10 per meters) – capacitance : C < 100 nF/km (100 pF/m) – impedance characteristic : 80 to 120 Ohms (= √L/C with L : inductance) – transmission velocity (= 1/√LC) > 66 % light velocity (300 000 km/s)

Fault indication 

An open circuit and short circuit on the CS31 bus are detected by the NCB. In this case, the different CS31 bus segments below the default are out of order. The CS31 bus segment above the default runs properly. The leds ERRORS "OUT" or "IN" are "ON" according on the CS31 bus in default. This error is displayed on the central unit (FK3) as a remote unit error. The access to the default is different according on the type of central unit : 07KR31 / 07KT31 – access to the default with the function block COPY to the memory address SEG : 0h and OFFSET : 8660h If the value is 2Ah, then almost one of the NCB's is on default. (The red led on central unit is OFF). The default is reset on the central unit when 0 is written at the address 0:8660h (with the function block COPY). – access to the default as an FK3 error number 17d with the versions produced after April 96 (07KR31 index J and 07KT31 index B).

07KR91 / 07KT92 / 07KT93 

– access to default with the function block COPY to the memory address SEG : C000h and OFFSET:0100h If the value is 2Ah, then almost one of the NCB's is on default. (The red led on central unit is ON). The default is reset on the central unit when 0 is written at the address 0C00/0100h (with the function block COPY). 07CS61 (for T200) – Version index c R202 The default is seen as a bus error without any remote unit number. – Version index d R202 and next The default is set in the bit 4 of the word MW4104,03 for the first CS31 line, MW4105,11 for the second CS31 line, MW4107,03 for the third CS31 line and MW4108,11 of the fourth CS31 line. 07CS91 (for T300) and UCZA/UCZB The diagnosis is not available.