Answer / jignesh patel(abb)

The philosophy for modbus and profibus is same.....the
difference is
1.modbus you can go up to 1200m only in the case of profibus
you can go up to 2-5 km.
2.In modbus the speed will be 125kbs where profibus it will
be 1.5 mbs to 12mbs.
3.In modbus you can connect maximum 32 devices for RS485
where in Profibus you can go upto 127devies without repeater.

what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?

0 Answers  

---

How many ohms are required for proper earthing?

0 Answers  

---

what are the following documents comes under loopchecking

1 Answers   Heisco,

---

what is the deference bitween DCS and PLC SCADA HMI System for Power Process Industry.

1 Answers   UltraTech,

---

What is minimum distance between three thermocouples (2oo3) mounted on same pipe line (20")? Technically accepted by stright line mounted or circler mounted?

1 Answers  

---

hi this is noor in my work spot, i arranged THERMOCOUPLE in the place of RTD. (in FEED WATER tank). can i use T/C or not?

10 Answers  

---

control modes

1 Answers   Vedanta,

---

What are the charecterstics of control valve.

2 Answers  

---

During the design and engineering of a process plant, a good designer should plan for ____________, ___________ and ____________ aspects of the plant

1 Answers  

---

what is proportional & what is proportional band

1 Answers   Nimir,

---

what is compensation? temprature & pressure

0 Answers  

---

What is voltage regulator?

0 Answers  

---