VALCO MELTON D4-L, Руководство пользователя

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MUS01210202 07/01/2020
MELTON, S.L.U. - POLIGONO INDUSTRIAL AGUSTINOS CALLE G-34,31160 ORCOYEN, NAVARRA
TEL: 00 34 948 321580 Fax: 00 34 948 326584 e-mail: melton@melton.es http://www.valcomelton.com
81
Error code: 1 Byte 0x90
Exception code: 1 Byte 01 ó 02 ó 03 ó 04
Example:
Sending Reply
Function 10 Function 10
Start address Hi 00 Start address Hi 00
Start address Lo 01 Satart address Lo 01
Register quantity Hi 00 Register quantity Hi 00
Register quantity Lo 02 Register quantity Lo 02
Bytes quantity 04
Register value Hi 00
Register value Lo 0A
Register value Hi 01
Register value Lo 02
9.2.2. COMMUNICATION MODES: MODBUS (RS-485, 8N +1)
With this communication mode, the micro-controller is a slave, that is to say, it waits
for PLC request about state of values that it wants.
Using previous functions, PLC starts communications, and it makes that micro-
controller sends the state of values.
PLC reads continuously the equipment values to actualize them.
MODBUS PROTOCOL ADDRESSES
:
MODBUS DATA AND ADDRESS
NECESSAR
Y DATA
MODBUS
HEX ADDRESS NOTES
Dep prog 0x0100 L/E
M1 prog 0x0101 L/E
P1 prog 0x0102 L/E
M2 prog 0x0103 L/E
P2 prog 0x0104 L/E
M3 prog 0x0105 L/E