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Brand:SBS
Type:PMC-HS-SERIAL
Origin:the United States
Warranty: 365 days
Colour: new/used
Shipping method: Courier delivery
Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, mechanical, electronic manufacturing, automobile manufacturing, plastic machinery, electric power, water conservancy, water treatment/environmental protection, boiler heating, energy, power transmission and distribution and so on.
Spare parts spare parts, the main DCS control system of PLC system and the robot system spare parts,
Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts
The data fields in responses to other kinds of queries could contain error counts or other data requested by the sub-function code.
1 Force Multiple Coils (Function Code 15) Query This function forces each coil (Modbus 0x range) in a consecutive block of coils to a desired ON or OFF state. Any coil that exists within the controller can be forced to either state (ON or OFF). However, because the controller is actively scanning, unless the coils are disabled, the controller can also alter the state of the coil. Coils are numbered from zero (coil 00001 = zero, coil 00002 = one, and so on). The desired status of each coil is packed in the data field, one bit for each coil (1= ON, 0= OFF). The use of slave address 0 (Broadcast Mode) forces all attached slaves to modify the desired coils. Note: Functions 5, 6, 15, and 16 are the only messages (other than Loopback Diagnostic Test) that are recognized as valid for broadcast. The following example forces 10 coils starting at address 20 (13 HEX).
The two data fields, CD =1100 and 00 = 0000 000, indicate that coils 27, 26, 23, 22, and 20 are to be forced on. Note: This is the structure of the message being sent out to the Modbus network. The byte values below are in hexadecimal display. Node Address Func Code Coil Address High Coil Address Low Number of Coils High Number of Coils Low Byte Count Force Data High 20 to 27 Force Data Low 28 to 29 Error Check Field (2 bytes) 0B 0F 00 13 00 0A 02 CD 01 CRC Response The normal response is an echo of the slave address, function code, starting address, and quantity of coils forced. Node Address Func Code Coil Address High Coil Address Low Number of Coils High Number of Coils Low Error Check Field (2 bytes) 0B 0F 00 13 00 0A CRC Writing to coils with Modbus function 15 is accomplished regardless of whether the addressed coils are disabled or not. Coils that are not programmed in the controller logic program are not automatically cleared upon power up. Thus, if such a coil is set ON by function code 15 and (even months later) an output is connected to that coil, the output is hot.
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