Yaskawa G7 Modbus Communication - Manual (Page 43)

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Broadcast Registers (Write Only)
Broadcast Registers are those registers used to control the simultaneous operation of multiple devices either through a network interface (option
card) or via Modbus RTU communication. These registers are available during drive Run.
The “Address” column contains the register address in hexadecimal format. Drive registers are always referenced in hexadecimal format. The
“Function” column contains the register name. The “Bit” and “Description” columns contain the list of available bits for that register and a short
description of each. If the “Bit” column is empty, the register contains word data and individual bits have no value.
Table 4.2 Broadcast Registers (Write Only)
Addr. Function Bit Description
0000h Reserved - Reserved
0h 0 = Stop, 1 = Run
1h 0 = Forward, 1 = Reverse
2h Reserved
3h Reserved
4h Reserved
5h Multi-Function Digital Input Terminal S3. Function set by setting of H1-01
6h Multi-Function Digital Input Terminal S4. Function set by setting of H1-02
7h Reserved
8h Reserved
9h Reserved
Ah Reserved
Bh Reserved
Ch Multi-Function Digital Input Terminal S5. Function set by setting of H1-03*
Dh Multi-Function Digital Input Terminal S6. Function set by setting of H1-04*
Eh Multi-Function Digital Input Terminal S7. Function set by setting of H1-05*
0001h
Digital Input
Command
Fh Multi-Function Digital Input Terminal S8. Function set by setting of H1-06*
0002h
Frequency
Reference
- 30000 / 100% **
Note: * These bits must be enabled using register 0Fh, bits 0Ch, 0Dh, 0Eh and 0Fh. Refer to Table 4.1 Command Registers (Read/Write).
** This value must be sent to the drive as a hexadecimal value. Example: 4096 = 1000h.
The scaling is fixed at 30000 / 100% and is not affected by parameter o1-03. It is affected by the maximum output frequency (E1-04) of the drive
receiving the command. Simply it is ((decimal frequency reference) / 30000) x (E1-04).
Example: Send 1000h to drive. 1000h = 4096 decimal. (4096 x 100%) / 30000 = 13.65%. If drive’s maximum frequency is 60Hz, then the
frequency reference command to the drive is 60Hz x 13.65% or 8.19Hz.