3-1
Section 3 System Configuration
3-1-1 Mounting position
To use these modules, they need to be connected to the SX bus of MICREX-SX series SPH or to the link (remote I/O) of I/O
master module. Their mounting position on the base board is as follows.
3-1 Mounting on the Base Board
<8/11/13-slot base board>
These modules can be mounted in any slot except those for the power supply module
(the two slots from the left on the base board).
Mountable slots
Mountable slots
Mountable slots
Mountable slots
<3/6-slot base board>
Note: These modules can be mounted also on the base board of remote I/O such as T-link,OPCN-1 and DeviceNet.
3-1-2 Number of mountable modules
It is possible to connect a maximum of 238 modules to the SX bus (a maximum of 254 modules in one configuration including
the link of the I/O master) (due to hardware limitation). It should be noted, however, that the maximum number of analog
voltage/current input modules and analog voltage/current output modules that can actually be connected is limited by the
number of words (512 words) they occupy in the input/output areas (I/Q areas).
Because the number of words occupied by an analog 8ch module is 12 words and that occupied by an analog 4ch output
module and analog input/output module is 8 words, the maximum number of mountable modules becomes as follows:
Analog 8ch modules: 512 words / 12 words = 42 units
Analog 4ch modules / Analog input/output module: 512 words / 8 words = 64 units
Note: Suppose that 42 units of 8ch analog modules are connected in one configuration, then the input/output areas that other
input/output modules can use become 8 words.