Chapter 3
Installation
MAN_105G_1.16
Page 68
Command Description
Code
Function
Code
Comment
Protected Write
0x00
NONE
PLC2 series and SLC / Micrologix
Unprotected Read
0x01
NONE
PLC2 series and SLC / Micrologix
Diagnostic Status
0x06
0x00
Diagnostic Commands
Echo message
0x06
0x00
Unprotected Write
0x08
NONE
PLC2 series and SLC500 / Micrologix
Typed logical Read
0x0F
0xA2
Type
SLC500 and Micrologix
Read Bits
0x0F
0xA2
0x85 Reads MSB of each 105G I/O register and
writes the bits to the destination register,
starting at the LSB of the register. Min
transfer is 16 bits.
Read Integers
0x0F
0xA2
0x89
Return signed 16 bit value
Read Long Ints
0x0F
0xA2
0x91
Unsigned 16 bit register per long-word
Typed logical Write
0x0F
0xAA
Type
SLC500 and Micrologix
Write Bits
0x0F
0xAA
0x85 Writes bits from the source register, starting
at the LSB, to the MSB of a block of 105G
I/O registers. Min. transfer is 16 bits.
Write Integers
0x0F
0xAA
0x89
Writes a signed 16 bit value
Write LongIntegers
0x0F
0xAA
0x91
Low 16 bits of long-word placed in register.
Upper 16 bits ignored.
The SLC and Micrologic PLC’s read/write two types of registers. An “Integer” has a signed
16 bit value (-32768 to 32767). A “Long Integer” has a 32 bit value. The 105G registers
contain an unsigned 16 bit value (0 to 65535). We recommend that you use Long Integer
read/write commands - the upper 16 bits of the 32 bit value will be ignored. Refer to more
information in the Analogue I/O and Pulse I/O sections below. The PLC2 uses unsigned 16 bit
registers in the same format as the 105G.
The 105G DF1 driver will update remote outputs whenever a data value changes by more
than the I/O register sensitivity. If the response from a data request contains a changed data
value, the new value will be transmitted to the remote 105U on the radio network. Similarly,
if the 105G receives a command to change a data value, the new value will be transmitted to
the remote 105U module.
The DF1 commands are configured in the “Serial Mapping” screen. The serial port should be
configured in the same way as the host device. If the 105G acts only as a command
responder, no further configuration is required.
If the 105G acts as a command initiator, you can enter a “Request Delay” between
commands sent to the host. To enter a DF1 command, select “New Serial Mapping”. The
following example is a file write command which writes 105G I/O registers 80 – 104 (25
registers) to DF1 files I3.1 to I27.1 at DF1 address 2
.