Micromod MOD: MODBUS RTU Communications Guide Instrukcja Użytkownika Pobierz pdf (Strona 26)

MODBUS RTU

COMMUNICATIONS GUIDE

WIRE CONNECTIONS

Table 13. Wire Connections for RS-232 Devices

PC Serial Port MOD30ML Mod RS-232 MOD30ML Modcell

25-Pin 9-Pin Port 1 Port 2 cell Port 1 Port 2

BI 9&10 7&8 MLP Master Slave BI 9&10 7&8 MLP

2 3 3 9 13 Hi-1 Tx

⇒

Rx 2 8 12 Hi-2

3 2 2 8 12 Hi-2 Rx

⇐

Tx 3 9 13 Hi-1

7 5 1 10 14 Lo-2 Gnd

⇔

Gnd 1 10 14 Lo-2

Table 14. Wire Connections for RS-485 (4 or 5-Wire) Devices

B&B Quatech OPTO-22 MOD30ML Mod RS-485 MOD30ML Modcell

3PXOCC2A

DSP-225 AC 24 AT Port 1 Port 2 cell

(4 or 5-Wire)

Port 1 Port 2

3PXCC2A DS-300 or AC 34 BI 9&10 7&8 MLP Master Slave BI 9&10 7&8 MLP 2050R

2 2 4 3 9 13 Hi-1 Tx+

⇒

Rx+ 5 11 15 Lo-1 35

3 7 5 2 8 12 Hi-2 Tx-

⇒

Rx- 4 10 14 Lo-2 34

9 4 8 5 11 15 Lo-1 Rx+

⇐

Tx+ 3 9 13 Hi-1 33

1 8 9 4 10 14 Lo-2 Rx-

⇐

Tx- 2 8 12 Hi-2 32

5331 Gnd

⇔

Gnd 1 29

B&B Quatech OPTO-22 RS-485 Commander

3PXOCC2A

DSP-225 AC 24 AT

(4 or 5-Wire)

C100

3PXCC2A DS-300 or AC 34 Master Slave MR250 C1900 C150 C200 C300 C310 C500 PR100

224Tx+

⇒

Rx+ 7 7 22 7 9 21 34 3

375Tx-

⇒

Rx- 8 6 23 6 102235 2

948Rx+

⇐

Tx+ 3 4 20 4 111832 5

189Rx-

⇐

Tx- 2 5 21 5 121933 6

533Gnd

⇔

Gnd 12 8 24 Gnd 8 20 36 8

Table 15. Wire Connections for RS-485 (2 or 3-Wire) Devices

B&B Quatech OPTO-22 MOD30ML Mod RS-485 MOD30ML Modcell

3PXOCC2A

DSP-225 AC 24 AT Port 1 Port 2 cell

(2 or 3-Wire)

Port 1 Port 2

3PXCC2A DS-300 or AC 34 BI 9&10 7&8 MLP Master Slave BI 9&10 7&8 MLP 2050R

2&9 2&4 4-8 3&5 9&11 13&15 Hi&Lo-1 RxTx+

⇔

RxTx+ 3&5 9 13 -1 33&35

3&1 7&8 5-9 2&4 8&10 12&14 Hi&Lo-2 RxTx-

⇔

RxTx- 2&4 8 12 -2 32&34

5331 Gnd

⇔

Gnd 1 29

B&B Quatech OPTO-22 RS-485 Commander

3PXOCC2A

DSP-225 AC 24 AT

(2 or 3-Wire)

C100

3PXCC2A DS-300 or AC 34 Master Slave MR250 C1900 C150 C200 C300 C310 C500 PR100

2&9 2&4 4-8 RxTx+

⇔

RxTx+ 3&7 4 22 4 34

3&1 7&8 5-9 RxTx-

⇔

RxTx- 2&8 5 23 5 35

533Gnd

⇔

Gnd 12 8 24 7 36

* NOTES: 1. MOD30ML and Modcell do not support MODBUS Master

communications with a 2-wire RS-485 module.

2. On Modcell MLP and MOD30ML, 4-wire modules are recommended for

all applications, even for 2-wire installations.

WARNING Incorrect wiring can damage communication hardware.

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