RS-232 Connections

Appendix D: Serial Connections

 

 

 

 

DB-9M

Signal

RS-232

DTE

Pin

 

 

 

2

Receive Data

RXD

In

3

Transmit Data

TXD

Out

5

Signal Ground

GND

---

Figure 37. RS-232 Connections for DB-9 Connector

 

 

 

 

Signal Name

Label

Direction

Terminal

Receive Data (+)

RDB(+)

In

1

Receive Data (-)

RDA(-)

In

2

Transmit Data (+)

TDB(+)

Out

3

Transmit Data (-)

TDA(-)

Out

4

Signal Ground

GND

---

5

Figure 38. MES1B Terminal Block Pin-out for RS-422/485 Four-Wire

Operation

Manual Documentation Number: MES1A/MES1B-2106m

PN7138-rev001

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104www.bb-elec.com

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

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B&B Electronics MES1A, MES1B manual Appendix D Serial Connections, Dte