Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 290)

Chapter 15
Using Communication Protocols
15–6
Controller Communication Status Bit
When using the MSG instruction, you should also use the following
controller communication status bit:
Active Protocol Bit (S:0/11) – This is a read-only bit that indicates which
communication protocol is currently enabled or functioning: where 0 = DF1
(default) and 1 = DH-485. Use this bit in your program to restrict message
operation to a specific protocol.
Entering the Instruction
You enter the instruction from within the program monitor functional area.
The following items apply when entering the instruction:
Important: Only Series B or later MicroLogix 1000 HHPs and Series C or
later MicroLogix 1000 controllers support the MSG instruction.
Only Series C MicroLogix 1000 HHPs fully support Series D
functionality.
Only Series C MicroLogix 1000 HHPs will support MicroLogix
1000 analog controllers.
In order to enter the instruction, your program must be
configured to operate with Series C or later MicroLogix 1000
controllers. See page 18–18 for more information.
•
Whenever you see asterisks on the display, the HHP is waiting for data
entry (i.e., a number).
•
When entering the target address, an element or subelement is entered by
first pressing the right arrow key. For example, to enter the address
I1:8.9, you would press the following key sequence:
9 8
MENU
I
1
•
If you see a down arrow on the display it means there are more options
available. To scroll through the options, press this key:
•
You can return to previously entered operands by pressing this key:
Then if you want to edit that operand, press DEL or FUN-DEL and enter
new parameters. Press ENT to accept the operand and move on to the next
one. Once the entire instruction is entered, if you want to edit the
instruction’s parameters, you must go into the overwrite mode. (See page
17–4.)