Yaskawa MEMOCON GL120 - Manual (Page 127)

4.3 CPU Modules
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4) MEMOBUS PLUS network communications specifications are shown in the following
table.
Table 4.19 MEMOBUS PLUS Network Communications Specifications
Item Specifications
Baud Rate 1 Mbps
Transmission Distance 450 m max. without a repeater
1,800 m max. with a repeater
Number of Nodes (Number of Connectable
Communications Devices)
32 nodes max. without a repeater
64 nodes max. with a repeater
Transmission Media Shielded twisted-pair cable
Transmission Error Detection CRC-16
Media Access Control Method Token bus
5) The connector for the MEMOBUS PLUS port is a terminal block connector (3-pin, fe-
male). The connector pin arrangement and the signal names are shown in the following
table.
Table 4.20 Pin Arrangement and Signal Names
Pin
Number
Symbol Signal Name
1 DH DATA HIGH
2 DL DATA LOW
3 SHLD SHIELD
4. Key Switch
1) The key switch is a non-automatic-return switch and has
three positions (right, center, and left) as shown in the dia-
gram on the right.
2) The key switch has the following two functions:
a) Memory protection ON/OFF
b) RUN operation
4