Omron CJ1W-PRT21 Operation Manual page 43

Setting up a network
C200HW-PRM21
GSD file
Modular slave
Check configuration
Parameter data
24
For more details about the configurator for the C200HW-PRM21 Master Unit,
refer to OMRON Catalog No. W349-E1.
To configure a master unit to communicate with the CJ1W-PRT21, the Unit's
device database file OC_0602.GSD is required. Based on the contents of this
file, the configuration program for the master unit will allow the user to specify
the amount of input- and output data to be exchanged. The sizes of the in-
and the output block can both be set in 1-word increments from 0 to 100
words.
The CJ1W-PRT21 is characterised as a modular slave. The following types of
data exchange modules are pre-defined:
IN modules of 1, 2, 4, 8, and 16 words
OUT modules of 1, 2, 4, 8, and 16 words
IN/OUT modules of 1+1, 2+2, 4+4, 8+8, and 16+16 words
By concatenating up to 32 modules, any desired size of input and output block
can be created (multiple selections of any module type are allowed). The
sequence in which the modules are entered is irrelevant. Only the resulting
total lengths of the input and output areas are of significance.
Upon startup of the PROFIBUS-DP communication, the master unit will send
a Chk_Cfg message so that the slave can verify that the master's expected
I/O configuration for the slave is correct.
The CJ1W-PRT21 Slave Unit will accept any in/ out words up to 100 input,
100 output words. The maximum of input + outputs must be 180 words or
less.
The Set_Prm telegram will provide the following information at system star-
tup, after a restart and in data exchange mode:
• Start address of the area in the host PLC where to read and to send to the
master.
• Format (Motorola/Intel) of the data to be sent to the master.
• Actions to be taken in case of PLC status change or fatal errors.
• Inclusion of 2 words PLC status information or not.
Section 3-3