Communication
GTW/EN
CT/C40
PACiS Gateway
Page 33/64
4.3
Serial transmission mode
When messages are transmitted on standard MODBUS serial networks, each byte is sent
LSB first.
The format for each byte in MODBUS RTU mode is:
Coding system:
8-bit binary, hexadecimal 0-9, A-F
Two hexadecimal characters contained in each 8-bit field of the message
Bits per Byte:
1 start bit,8 data bits,
LSB sent first,2 stop bits if no parity, or 1 parity bit and 1 stop bit)
Error Check Field:
Cyclical Redundancy Check (CRC-16)
4.4 MODBUS
Functions
MODBUS defines 24 functions, valid codes are in the range of 1-24.
4.4.1 Supported
functions
Code
Function name
Supported
01
READ COIL STATUS [ identical to function code 02 ]
YES
02
READ INPUT STATUS [ identical to function code 01 ]
YES
03
READ HOLDING REGISTERS [ identical to function code 04 ]
YES
04
READ INPUT REGISTERS [ identical to function code 03 ]
YES
05
FORCE SINGLE COIL
YES
06
PRESET SINGLE REGISTER
NO
07
READ EXCEPTION STATUS
NO
08
DIAGNOSTICS [ only sub function 0 is supported ]
YES
09 PROGRAM
484
NO
10 POLL
484
NO
11
FETCH COMM. EVENT CTR.
NO
12
FETCH COMM. EVENT LOG
NO
13 PROGRAM
CONTROLLER
NO
14 POLL
CONTROLLER
NO
15
FORCE MULTIPLE COILS
YES
16
PRESET MULTIPLE REGISTERS
NO
17
REPORT SLAVE ID
NO
18 PROGRAM
884/M84
NO
19
RESET COMM. LINK
NO
20
READ GENERAL REFERENCE
NO
21
WRITE GENERAL REFERENCE
NO
22
MASK WRITE 4X REGISTER
NO
23
READ/WRITE 4X REGISTERS
NO
24 READ
FIFO
QUEUE
NO
Summary of Contents for GTW/EN T/C40
Page 1: ...PACiS GTW Gateway GTW EN T C40 Version 4 5 Technical Guide ...
Page 2: ......
Page 4: ...GTW EN T C40 Technical Guide Page 2 2 PACiS GTW gateway BLANK PAGE ...
Page 5: ...Safety Handling GTW EN SA C40 PACiS GTW gateway SAFETY HANDLING ...
Page 6: ......
Page 8: ...GTW EN SA C40 Safety Handling Page 2 8 PACiS GTW gateway BLANK PAGE ...
Page 14: ...GTW EN SA C40 Safety Handling Page 8 8 PACiS GTW gateway BLANK PAGE ...
Page 15: ...Technical Data GTW EN TD C40 PACiS GTW gateway TECHNICAL DATA ...
Page 16: ......
Page 31: ...Introduction GTW EN IT C40 PACiS GTW Gateway INTRODUCTION ...
Page 32: ......
Page 34: ...GTW EN IT C40 Introduction Page 2 8 PACiS GTW Gateway BLANK PAGE ...
Page 40: ...GTW EN IT C40 Introduction Page 8 8 PACiS GTW Gateway BLANK PAGE ...
Page 41: ...Hardware Description GTW EN HW C40 PACiS GTW gateway HARDWARE DESCRIPTION ...
Page 42: ......
Page 44: ...GTW EN HW C40 Hardware Description Page 2 8 PACiS GTW gateway BLANK PAGE ...
Page 51: ...Connection GTW EN CO C40 PACiS Gateway CONNECTION ...
Page 52: ......
Page 54: ...GTW EN CO C40 Connection Page 2 8 PACiS Gateway BLANK PAGE ...
Page 60: ...GTW EN CO C40 Connection Page 8 8 PACiS Gateway BLANK PAGE ...
Page 61: ...Installation GTW EN IN C40 PACiS Gateway INSTALLATION ...
Page 62: ......
Page 64: ...GTW EN IN C40 Installation Page 2 30 PACiS Gateway BLANK PAGE ...
Page 82: ...GTW EN IN C40 Installation Page 20 30 PACiS Gateway Don t forget to click on the Apply button ...
Page 93: ...Human Interface GTW EN HI C40 PACiS GTW gateway HUMAN INTERFACE ...
Page 94: ......
Page 96: ...GTW EN HI C40 Human Interface Page 2 12 PACiS GTW gateway BLANK PAGE ...
Page 106: ...GTW EN HI C40 Human Interface Page 12 12 PACiS GTW gateway BLANK PAGE ...
Page 107: ...Communication GTW EN CT C40 PACiS Gateway COMMUNICATION ...
Page 108: ......
Page 172: ...GTW EN CT C40 Communication Page 64 64 PACiS Gateway BLANK PAGE ...
Page 173: ...Commissioning GTW EN CM C40 PACiS GTW gateway COMMISSIONING ...
Page 174: ......
Page 176: ...GTW EN CM C40 Commissioning Page 2 4 PACiS GTW gateway BLANK PAGE ...
Page 179: ...Record Sheet GTW EN RS C40 PACiS GTW gateway RECORD SHEET ...
Page 180: ......
Page 182: ...GTW EN RS C40 Record Sheet Page 2 6 PACiS GTW gateway BLANK PAGE ...
Page 187: ...Maintenance GTW EN MF C40 PACiS GTW gateway MAINTENANCE ...
Page 188: ......
Page 192: ...GTW EN MF C40 Maintenance Page 4 68 PACiS GTW gateway BLANK PAGE ...
Page 256: ...GTW EN MF C40 Maintenance Page 68 68 PACiS GTW gateway BLANK PAGE ...
Page 257: ...Problem Analysis GTW EN PR C40 PACiS GTW gateway PROBLEM ANALYSIS ...
Page 258: ......
Page 260: ...GTW EN PR C40 Problem Analysis Page 2 4 PACiS GTW gateway BLANK PAGE ...
Page 263: ...Functional Description GTW EN FT C40 PACiS Gateway FUNCTIONAL DESCRIPTION ...
Page 264: ......
Page 266: ...GTW EN FT C40 Functional Description Page 2 12 PACiS GTW gateway BLANK PAGE ...
Page 276: ...GTW EN FT C40 Functional Description Page 12 12 PACiS GTW gateway BLANK PAGE ...
Page 277: ...Logical Diagram GTW EN LG C40 PACiS GTW gateway LOGICAL DIAGRAM ...
Page 278: ......
Page 280: ...GTW EN LG C40 Logical Diagram Page 2 6 PACiS GTW gateway BLANK PAGE ...
Page 284: ...GTW EN LG C40 Logical Diagram Page 6 6 PACiS GTW gateway BLANK PAGE ...
Page 285: ...Glossary GTW EN LX C40 PACiS GTW gateway GLOSSARY ...
Page 286: ......
Page 287: ...Glossary GTW EN LX C40 PACiS GTW gateway Page 1 10 CONTENT 1 INTRODUCTION 3 2 LEXICAL 4 ...
Page 288: ...GTW EN LX C40 Glossary Page 2 10 PACiS GTW gateway BLANK PAGE ...
Page 297: ......