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 is the PID controller?

1 Answers  

---

what is the difference betwwen the 2wire level transmitter and 4wire level transmitter??and their applications also??

2 Answers  

---

IF I WANT TO BUY A THERMOCOUPLE THEN WITCH PARAMETER I LOOK

1 Answers  

---

What is input and output of vaiberation transmitter and what is its unit.

4 Answers   SMH,

---

give eg of how I/P is used in control loops

0 Answers   CEPC,

---

---

purpose of absolute ppressure transmitter applcation?

1 Answers  

---

What is the Flow rate ?

2 Answers  

---

what is Automation?

3 Answers  

---

can anybody will tell me abiut PID controller.

4 Answers  

---

What are the charecterstics of control valve.

2 Answers  

---

what is the difference between transmitter and smart transmitter ?

4 Answers   Aditya Birla,

---

how control valve works?

7 Answers   Qatar Airlines,

---