Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Modrw, PLC COM COM1 COM2 COM3

3. Instruction Set

API

150

Mnemonic	Operands	Function	Controllers
MODRW		MODBUS Read/ Write	ES2/EX2	SA2	SA2 SX2
				SE

Type

Bit Devices

Word devices

Program Steps

OP

X

Y

M

S

K

H

KnX

KnY

KnM

KnS

T

C

D

E

F

MODRW: 11 steps

S1

*

*

*

S2

*

*

*

S3

*

*

*

S

*

n

*

*

*

16-bit

PULSE

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

S1: Device address (K1~K254) S2: Function code: K2(H2), K3(H3), K5(H5), K6(H6), K15(H0F) ,

K16(H10) S3: Data address S: Data register n: Data length.

Explanations:
1.	MODRW supports COM1 (RS-232), COM2 (RS-485), COM3 (RS-485). (COM3 is only
	applicable to DVP-ES2/EX2/SA2/SE, and is not applicable to DVP-ES2-C.)
2.	S1: Address of the device to be accessed. Range: K1~K254.
3.	S2: Function code. H02: read multiple bit devices of DVP-PLC; H03: read multiple word
	devices of AC motor drive or DVP-PLC; H05: force ON/OFF bit device; H06: write in single
	word device of AC motor drive or DVP-PLC; H0F: write in multiple bit devices of DVP-PLC;
	H10: write in multiple word devices of AC motor drive or DVP-PLC. Only these function codes
	are available currently; other function codes are not executable. Please refer to the program
	examples below for more information
4.	S3: Address of the data to be accessed. If the address is illegal for the designated
	communication device, the communication device will respond with an error message and
	DVP-PLC will store the error code and associated error flag will be ON.
	z Associated registers and flags indicating errors on PLC com ports: (For detailed
		information please refer to Points to note of API 80 RS instruction.)
		PLC COM	COM1	COM2	COM3
		Error flag	M1315	M1141	M1319
		Error code	D1250	D1130	D1253
	z For example, if 8000H is illegal for DVP-PLC, the error will be in indicated by different set
		of flags and registers. For COM2, M1141 will be ON and D1130 = 2; for COM1, M1315 =
		ON and D1250 = 3, for COM3, M1319 = ON and D1253 = 3. Please check the user
		manual of DVP-PLC for error code explanations.
5.	S: Registers for storing read/written data. Registers starting from S stores the data to be
	written into the communication device or the data read from the communication device. When

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