beautypg.com

Appendix c: rs-485 connections, Esr90, Db-9 – B&B Electronics ESR904 - Manual User Manual

Page 84: Out in, Rs-485h, Wire, Half duplex

background image

RS-485 Connections

74

Appendix C

Manual Documentation Number: ESR90x-5012m

B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

A

A

P

P

P

P

E

E

N

N

D

D

I

I

X

X

C

C

:

:

R

R

S

S

-

-

4

4

8

8

5

5

C

C

O

O

N

N

N

N

E

E

C

C

T

T

I

I

O

O

N

N

S

S

ESR90x DB-9 Pin-out in RS-485H (two-wire, half duplex) Mode

RS-485

Signal Name

Direction

RS-485

DB9M

Pin

Data B (+)

In/Out

DATA B (+)

3

Data A (−)

In/Out

DATA A (−)

4

Signal Ground

---

GND

5

Figure 53. DB-9 Pin-out in RS-485 Mode

See also other documents in the category B&B Electronics Accessories communication: